Problem with my dynamic actor.

I recently completed a model of a character for an attempt at a game, and I tried to put it in a basic test level, to test animations, etc.
But as soon as I turn it into a dynamic actor it falls straight through the objects below it, sometimes getting caught by the head, for some reason.

I feel like i’m missing something obvious here, can someone help me out? :eek:

Oops, nevermind, I fixed it, :o

Now it’s doing it again with a different model, sometimes when it’s dynamic it will just spin out of control, either that or I add ghost and it falls straight through everything, frustrating, :mad:

I can’t help you with GameEngine but do you have a question about modelling?