PP2012 SR3 has not crashed on me for a very long time.
Actually, I can not remember a crash in SR2, SR2.1 or SR3.

Delete your prefs, Poser will build a new set on next startup.

Upgrade/update your video drivers.

Clean your system using something like Advanced Sytem Care free from iobit, and run it a couple of times in deepclean mode.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!