Problem with armatures screwing up.

Hi I’m doing my first bit of character animation and i’m having problems with the armatures all twisting up. They work fine in design mode even when a mesh is parented to it, but when I try to play it in a game (when i push ‘P’) the armature and the mesh parented to it all screws up in a bunch with all the bones overlapping, and it refuses to play any animation during the game. The animations themselves are fine cose they work ok when i play them with ALT-A.

Does anyone have any idea what I’m doing wrong? Some 1 plez help, cose I haven’t got a clue whats wrong and my mates r pushing me to get my game working.

I can get u pics of the armature before and after screwing up if it’ll help

Thanx.