I am having the same problem, and had to uninstall NVidia drivers back to 101.4. It would seem that the Poser SDK and the ProEngine.eon are not compatible with 158.

 

You should file an issue with tech support to NVidia and e-On about the difficulties. Tech has informed me they are hard at work and trying to resolve the problems. 

 

I have tried all of the Vista drivers and the closest to the old WinXP drivers seem to work the best for now. Unfortunately, the 158 drivers work will all of my other 3D software with a good 30% boost in performance. So hope this issue gets sorted out soon as I want to go back to the 158 drivers.

 

Others on the e-On forum tell me they are not having any problems as long as they do not use OpenGL, so this is the main source of the problem for us. Vue uses OpenGL extensively for the newer functions, rendering, and memory threading, which is the current source of problems. 

 

I recently saw a tech Newsletter, where NVidia is hiring more than a half dozen new Software Engineers at its offices, so they are not taking these issues lightly. I guess we are stuck in the middle, because I have installed Vue in Vista x64, x86, and WinXPsp2 and still have most of the same problems under each OS with the NVidia drivers.

jankeen.com