a friend of mine had a huge issue with moss.
whenever he started moss, it would immediately show an “moss does not work anymore” windows error.
We tryed to fix it over serveral methods which included compatibilty mode on moss and the game exe, steam exe and other stuff.
we even tryed out to change his regedit.
nothing seemed to work out.
However, the MOSS Beta client worked for him without any issues!
His OS is windows 8.1 –