Thanks, been following this forum for a while and finally had reason to post. 0.66 does the trick and I'll stick with that for now.
With the Intel Core 2 Duo E8500 3.17GHz system I was able to eliminate the crash by using the previous version of the threading DLL. This only delays the crash by a second or two on AMD Phenom II systems though.
That is too bad about XP support. I'd like to run qbismSuper8 on my AMD Geode LX and DM&P Vortex86MX+ systems that can't handle anything more recent. Both manage about 60fps in TyrQuake and it'd be interesting to see what I get with qbismSuper8.
Now back to playing with the various colored lighting and fog settings
