I have a quite heavy animation. with a big scenery and two rigs. some particles and items. Everytime I render, it either gives me a broken media file [encountered a problem while playing the file] which does not open or seriously glitched file or one that is good but cuts off on random time. It used to work normally before, I rendered a 3000 keyframe animation normally, but once I used a rig it started to glitch Any idea? Using demo 1.0.0/5