It's indeed a problem of NVIDIA's driver set. Vue uses multithreaded OpenGL rendering in different windows, something that can produce problems for NV drivers (see below). You can fix the issue by disabling the "background rendering thread" in Vue's properties (just above the OpenGL bit) or falling back on Microsoft's software OpenGL drivers as suggested by Tomsde. I have been bugging NV about this issue for some time, now, but it's very low on their priorities list, apparently. For some reason, Vue seems to be the only program that doesn't work properly with multithreaded OpenGL rendering (other professional OpenGL applications work just fine). It's probably an issue that has to be resolved by NV and e-on in tandem, i.e. NV will have to review e-on's code to provide some solutions for e-on to implement. I doubt NV will change their whole OpenGL drivers architecture just to please Vue users. ;) ta, -Sascha.rb