You do know how to use still backgrounds, which is all that Model Viewer is capable of. How do you currently put in backgrounds if not with Model Viewer? What are you putting into movie maker when it gives you the error?

Write on ARetardSquirl's Wall

hEY, with model viewer i can't work, because it won't record :(... i tried... and i recorded from the game, but it gives me an error when i put it in premiere or movie maker... can u tell me how to put backgrounds ?

Write on Armasheloo's Wall