Ok, so i loaded the Makehuman character I created into blender, now every time i hit p to start the game, blender shuts down. what do i do??? Heres the file.
Well I’m not sure why the Makehuman .obj you imported crashed Blender, however I managed to make your file work without Blender crashing. The problem is of course your character’s main body. To stop Blender from crashing, I selected the character’s body and went to the logic panel (F4). Once there I clicked on Actor then clicked on the Dynamic tab and enabled both Rigid body and No sleeping. After that I pressed P and everything worked! Try doing what I did and enable those options in the logic tab and see what happens (it worked for me). As for why that solves the problem, I have no clue 
Edit: You don’t actually have to enable the “No Sleeping” option and I suggest you don’t because it might interfere with your game later. However you MUST have “Rigid Body” enabled or else the game crashes. Hope this helps 
Thanks! its workin perfectly now! i appreciate the time you put into my problem.