Two things can cause that.. one is really big Runtime Folder (that is why I always recommend multiple Runtimes) and the other may just be corrupted Preferences.

Poser Pro offers Queue Rendering, Background Rendering, support for 64 Bit OS with FireFly Render 64 (FFRender64) , Network Rendering just on the Rendering.

Gamma Correction is now available for Rendering.  You can use the HDRI export
A big one that is not mentioned often is the support for Normal Mapping
There are also Four new Poser Pro figures for use in games and such

You also have the Poser Fusion Plug Ins for Lightwave, 3DS, Maya, and C4D.

ratscloset
aka John