Eeek! I'm going nuts!

Okay, so I finished the body work on my car, I cleaned it all really good with denatured alcohol, and sprayed it with primer, but the primer bubbles?!!?!?! What on earth causes bubbling, and how can I stop it?

Thanks
Skotter :screwy:

paint is too tick. do smaller coat.
Also, be sure the body is fully dried before painting