I realized I was doing something really foolish. Because of my lack of experience, I had copied the command wrongly... How about this? Any better? Code: zac@debian:~/wine-git$ ./wine start /Unix /home/zac/.wine/drive_c/Program\ Files/Houaiss/Houaiss.exe wine client error:0: version mismatch 0/395. Your wineserver binary was not upgraded correctly, or you have an older one somewhere in your PATH. Or maybe the wrong wineserver is still running? I don't know what to think or do... Could anyone help me understand this? Thanks!