Okay, more news about this 3.6 beta 4 weirdness....
POV-Ray 3.5 now crashes just like 3.6 beta 4. The quickres settings have
reverted to their defaults, giving me none of custom settings I created
for it.
ML-POV still renders perfectly, as far as I can see. POV-Ray 3.5 is
unusable now.
-Samuel Benge