I wonder if bad inventory bug on SP is caused by the new shared stash feature.
Got same problem with Linux SP. Can't even start playing, because it gives Bad Char Error on char creation.
I read on Linux install thread that putting MXL app data folder from home into wine Application Data folder.
After trying to create another new char, it doesn't give the error message, but instead gets into loading screen, door opens, but then freezes and gives "no response" message on Linux.
/e: Tried creating new char+new game on MP, but window just closes on game creation, lol!
/e2: Tried again with DDraw setting. What I don't understand is that in the launcher it puts a tick on Window Mode and greys it out, but when pressing play, it goes into full screen. Makes no sense.
Either way, I created another game and this time it was same as on SP, loading screen door opens and gets stuck.