crash when animating

Hi, I have a very serious problem peeps. Uhm, I was just animating a character of mine when suddenly, blender crashes(surprise!). I reloaded my blend a couple of times until blender loaded the blend without crashing. But here’s a problem, whenever I rotate or move my armature. Blender instantly crashes. This is a serious problem. PLEASE HELP.

Anyone? Please help?

which blender version are you usuing. official one or graphicall build? specify the revision also that might help. also upload a blend file also if possible.