watch video :-
character:
http://www.youtube.com/watch?v=srIXluc5IeY&feature=g-upl
ragdoll : http://www.youtube.com/watch?v=eQT4BLe95Hs&feature=related
i dont know whats the problem, but if you go to the armature in outliner, and expand it, the characters there, just delete the armature modifier and it reapears, i cant find out what the real problem is though :(
Some pretty funky stuff happening with your project here. I think you may wanna fix it up a bit and try re uploading it.