Customize Theme button returns 500 Error

Hi,

I got a 404 error when i tried installing the course plugin after installing your dashboard plugin. After that i got a 500 error when i tried a second time. Then i reinstalled the dashboard and now i finally have course press installed but i get 500 errors if i hit "customize". My memory limit is set to 64MB in the php ini and i'm running wordpress on godaddy.