I have a problem with Customize 2.1.1. It was working fine but it couldn't change all the themes correctly, meaning it still have icons and stuff from the previous theme it applied. Anyways now after clearing the cache in customize, customize no longer works for me

It load the chicken screen then got into customize for about 2 second then exit right out springboard. I tried the chmod +s and everything but it does not work. What should I do now?