Error in launcher

[PlayerOne]

When I start the launcher it shows a red bar saying "Error: There was an error, please check the errorLog.txt

It says:

[2019-04-28 13:26:35] Could not add "Run as Admin" option for C:\Users\Me\AppData\Local\Programs\medianxllauncher\Median XL Launcher\Median XL Launcher.exe. ||| TypeError: Cannot read property 'values' of undefined
[2019-04-28 13:26:36] caught error getHash: TypeError: Cannot read property 'replace' of undefined ||| outputHash: ||| filePath: D:\Games\Diablo II\Game.exe |||

The Play button is enabled though and the game seems to start ok. Should I care about this?

[RequiemLux]

For science, go to C:\Users\Me\AppData\Local\Programs\medianxllauncher\Median XL Launcher\ then right-click on "Median XL Launcher.exe" and in properties make sure the attribute "Read-only" is not checked and in the compatibility tab check the option "Run this program as an administrator". Do the same for "Game.exe" situated in D:\Games\Diablo II\Game.exe.
Also to avoid errors it would be better if both D2 and the Meadian Launcher were installed on the same drive, not sure this is your case.

[PlayerOne]

Thanks, I had Game.exe set to run as Admin but the launcher I'd set the shortcut but not, it seems, the exe itself.

I just restarted the machine from sleep today, started the launcher and it seems ok - so far (it seemed ok before but then after a couple of days it gave the above error). So.. fingers crossed, and thanks for your help!