Prime95 errors

So all of a sudden, the version of prime95 i had installed started giving me the error "unable to launch fft code errcode=1005." or something like that. I tried to uninstall, and re, install, to no avail. And I couldn't find any erlier versions to try out. Any ideas?

I have found sp2004. whish is the same thing, and that seems to be working fine.