Problem with open game :(

[Daevorn]

hey guys i can't play
open median xl but open diablo 2 my save gone what can i do ?????
error txt :

► Show Spoiler

[2019-12-4 16:14:29] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-4 16:14:53] TypeError: Cannot convert undefined or null to object
at Function.keys (<anonymous>)
at keys (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\reg.ts:239:41)
[2019-12-4 16:22:21] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-4 18:40:57] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-4 18:42:12] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-5 07:00:35] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-5 18:27:59] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-5 18:28:28] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 06:21:56] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 06:21:59] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2019-12-6 06:21:59] Diablo II location not specified. Cannot find D2VidTst.exe
[2019-12-6 06:21:59] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:21:59] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:21:59] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:22:46] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2019-12-6 06:22:46] Diablo II location not specified. Cannot find D2VidTst.exe
[2019-12-6 06:22:46] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:22:47] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:22:47] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:23:04] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 06:23:08] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2019-12-6 06:23:08] Diablo II location not specified. Cannot find D2VidTst.exe
[2019-12-6 06:23:08] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:23:08] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:23:08] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:23:18] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 14:29:03] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 19:08:02] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 21:36:06] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-7 08:16:33] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-7 11:10:45] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-7 21:54:34] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-8 08:21:08] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-8 19:52:30] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-9 07:20:00] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-9 10:39:43] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-9 16:07:51] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-9 18:54:46] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-10 16:05:56] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-10 21:25:17] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-11 15:39:01] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-11 18:15:22] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-12 15:42:34] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-12 20:14:21] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-13 18:10:14] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-13 19:57:58] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-15 10:26:34] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-01-7 16:25:55] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-01-17 16:24:57] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-02-14 22:45:08] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-1 15:17:32] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 08:58:11] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 08:58:14] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 08:59:15] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 08:59:17] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:01:15] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:01:18] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:03:48] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:03:55] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:15:15] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:15:18] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:22:13] Could not add "Run as Admin" option for C:\Users\Piotr\AppData\Local\Programs\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:22:16] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Users\Piotr\AppData\Local\Programs\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:26:08] Could not add "Run as Admin" option for C:\Users\Piotr\AppData\Local\Programs\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:26:10] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Users\Piotr\AppData\Local\Programs\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:28:12] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:28:14] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:31:30] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:31:32] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:01:13] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:01:19] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:04:38] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:04:40] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:04:53] Error: EPERM: operation not permitted, unlink 'C:\Diablo II\Fog.dll'
[2020-03-7 13:05:38] Error: EPERM: operation not permitted, unlink 'C:\Diablo II\Fog.dll'
[2020-03-7 13:05:42] Error: EPERM: operation not permitted, unlink 'C:\Diablo II\Fog.dll'
[2020-03-7 13:22:15] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:22:18] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:22:59] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:23:02] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:25:25] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:25:28] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:37:05] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:37:08] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 16:31:33] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 16:31:35] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)

[Istaryu]

[2019-12-6 06:23:08] Diablo II location not specified. Cannot find D2VidTst.exe

This should tell you. Go to the options, and give the launcher the location of the game.

[Daevorn]

nope still not working ;(

► Show Spoiler

[2019-12-4 16:14:29] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-4 16:14:53] TypeError: Cannot convert undefined or null to object
at Function.keys (<anonymous>)
at keys (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\reg.ts:239:41)
[2019-12-4 16:22:21] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-4 18:40:57] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-4 18:42:12] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-5 07:00:35] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-5 18:27:59] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-5 18:28:28] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 06:21:56] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 06:21:59] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2019-12-6 06:21:59] Diablo II location not specified. Cannot find D2VidTst.exe
[2019-12-6 06:21:59] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:21:59] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:21:59] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:22:46] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2019-12-6 06:22:46] Diablo II location not specified. Cannot find D2VidTst.exe
[2019-12-6 06:22:46] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:22:47] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:22:47] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:23:04] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 06:23:08] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2019-12-6 06:23:08] Diablo II location not specified. Cannot find D2VidTst.exe
[2019-12-6 06:23:08] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:23:08] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:23:08] Error: ENOENT: no such file or directory, mkdir ''
[2019-12-6 06:23:18] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 14:29:03] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 19:08:02] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-6 21:36:06] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-7 08:16:33] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-7 11:10:45] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-7 21:54:34] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-8 08:21:08] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-8 19:52:30] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-9 07:20:00] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-9 10:39:43] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-9 16:07:51] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-9 18:54:46] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-10 16:05:56] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-10 21:25:17] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-11 15:39:01] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-11 18:15:22] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-12 15:42:34] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-12 20:14:21] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-13 18:10:14] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-13 19:57:58] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-12-15 10:26:34] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-01-7 16:25:55] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-01-17 16:24:57] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-02-14 22:45:08] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-1 15:17:32] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 08:58:11] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 08:58:14] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 08:59:15] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 08:59:17] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:01:15] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:01:18] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:03:48] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:03:55] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:15:15] Could not add "Run as Admin" option for C:\medianxl instalka\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:15:18] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\medianxl instalka\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:22:13] Could not add "Run as Admin" option for C:\Users\Piotr\AppData\Local\Programs\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:22:16] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Users\Piotr\AppData\Local\Programs\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:26:08] Could not add "Run as Admin" option for C:\Users\Piotr\AppData\Local\Programs\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:26:10] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Users\Piotr\AppData\Local\Programs\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:28:12] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:28:14] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 09:31:30] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 09:31:32] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:01:13] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:01:19] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:04:38] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:04:40] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:04:53] Error: EPERM: operation not permitted, unlink 'C:\Diablo II\Fog.dll'
[2020-03-7 13:05:38] Error: EPERM: operation not permitted, unlink 'C:\Diablo II\Fog.dll'
[2020-03-7 13:05:42] Error: EPERM: operation not permitted, unlink 'C:\Diablo II\Fog.dll'
[2020-03-7 13:22:15] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:22:18] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:22:59] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:23:02] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:25:25] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:25:28] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 13:37:05] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 13:37:08] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 16:31:33] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 16:31:35] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 17:34:11] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2020-03-7 17:35:30] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 17:35:35] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 17:35:37] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 17:36:30] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2020-03-7 17:38:20] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 17:38:22] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 17:38:51] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2020-03-7 17:39:43] checkD2Path Invalid Diablo II installation selected.
Please make sure that you have a proper installation of Diablo II: Lord of Destruction.
[2020-03-7 17:41:04] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 17:41:06] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 17:41:32] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 17:41:35] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 17:42:37] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 17:42:39] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 17:43:26] Could not add "Run as Admin" option for C:\Program Files\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 17:43:28] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Program Files\Median XL Launcher\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)
[2020-03-7 17:46:16] Could not add "Run as Admin" option for C:\Diablo II\Median XL\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2020-03-7 17:46:23] Error: D2Sigma.dll missing
at p.pathExists.then.t (C:\Diablo II\Median XL\resources\app.asar\webpack:\src\main\helpers\func-main.ts:957:43)

[RequiemLux]

Make sure the installation path for Median XL (not the Launcher's one) matches with the installation path of Diablo2+LoD. You can check the Median XL's installation path in the setting page of the Launcher, to access click on the cog "⚙️" icon (up-right) in the Launcher window. If you do not remember where you installed Diablo2 LoD you can check its installation path by 'right-clicking' on Diablo2 LoD original shortcut, then selecting "Properties" and in the "Shortcut" tab read the path written in "Target:", the needed path should ends with the folder "Diablo II".
Also go here: C:\Diablo II\Median XL and righ-click on the "Median XL Launcher.exe" and in propetries (compatibility tab) set it to run as an Administrator.
If the problem persist you could try manually placing the mod files into the D2 directory following the instructions below.
Download these files: MXL.mpq • .dll and extract them to your Diablo II folder (where "Game.exe" can be found) using a program like 7-Zip. Both files are archives and both files need to be extracted. At the end of the exctraction process you should have obtained 3 new files (MXL.mpq, D2Sigma.dll and Fog.dll). In case it asks you if you want to replace the existing files, select yes.