> > > Delete all "global mix cache.dat" and "global mix database.dat" files on your HDD.

> I tried that, then I ran the Mixer again. It took it ages to scan through my files, but then it said ready.

> So I opened my RA2 folder in it - crash :-(

There's probably one file in your RA2 dir that causes the crash. You could try a reinstall of RA2 if you've got enough time, try to clean up your RA2 dir or just don't navigate to the RA2 dir anymore.

> Now it crashes again right after I start it.