I believe that there is some issue with ATI cards and OpenGL.  I ended up removing a pair of ATI Radeon 4870x2 cards because it killed Poser when I tried to import some OBJs.  After comparing notes with another user, I wonder if it may have been the Catalyst utility which was the culprit.    Moriador, do you have Catalyst on your machine?

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5