My model does not appear in the PhotoModeler Pro 5 3D Viewer and/or I am getting strange memory related crashes.

In most cases, downloading the most recent drivers for your video card from the manufacturers web site will solve the problem. If you have the latest video card driver and you are still experiencing problems, please try lowering or turning off your hardware acceleration (found through Display Properties / Settings / Advanced / Troubleshooting). This setting affects whether your Video card’s drivers or the native Windows graphic drivers are used for graphic display features.