I've had issues with Vue not running right on my computer in the past, but now I have a 64 bit system with 16 gbs of ram and it's running better--it just takes forever to render a large image.  I started with version 4, but after Vue 5 it started boggind down my 32 bit system so much I could only render very simple scenes with Poser figures without crashing the program.  I do not reccomend Vue to anyone who does not have a 64 bit computer who wants to render Poser scenes with it.  E-on is having a sale on the "artist series" Vue programs right now.  I wish I could learn to do landscapes in Carrara better, it does seem to tax my computers resources as severely, but their trees, plants, and skies aren't nearly as realistic as Vue's--and Bryce is even more perplexing to me.