Getting progressively more errors with this Linux launcher, to a point where it won't load anymore. I'm not discounting the possibility it's something I did (in fact, that's the most likely cause), so gonna go eat a pizza, then do a full reinstall and start from scratch.
Also, ty SteelWings, SwineFlu, and Deafwave. It's a shame we can't give out more than 1 cookie/day. GG guys.
Edit:
A clean reinstall seems to have fixed most of the errors at this point. (In the D2 install I was working with, I had uninstalled the M2017 version of the Launcher, installed the Sigma version of the Launcher for Windows, then tried using the Linux version. I'd bet that's what was causing the problems.)
I still get an error saying the program is not responding, but that's only b/c D2 hangs for about a second before launching. Otherwise, so far, so good.