[Bug 40990] Almost no 3D game works after i386-wine-staging 1.9.3

https://bugs.winehq.org/show_bug.cgi?id=40990

--- Comment #2 from Michael Müller  ---
(In reply to Sebastian Lackner from comment #1)
> - Based on the terminal output you probably did not set the WINEPREFIX
>
> correctly. In your case it should be set to "\home\werner.winebak",
> otherwise registry entries and dependencies will not be found correctly.

I think Sebastian means WINEPREFIX=/home/werner/.winebak (instead of
backslashes).