I am making a simple game. Setting the Box to dynamic and my armature and character to static , with ghost option activated so that it won't collide with the dynamic motion box. However , I got myself into a weird situation which had never happen before.When i play the game , the character was standing on the floor as i wanted . But the character change its shape when i tried to move it . Walking right and left doesn't seem to be a problem but when i press w to walk infront , it flew off to the mid sky and when i press s to move backwards , it went out of shape like the picture below show. Need a solution as fast as possible.
I tried to save the file so i could upload it here to be more specific. But after i save it and open it in another blender window . This is what i get.