Why is Coursepress freezing website?

I created a course with 12 units, 10 of which each have 10 questions. All the units have the box for mandatory to read and answer checked and the pages with questions are set to mandatory pass, also the questions are set to mandatory, assessable, and have no limit on attempts. I setup a sample account signed in and was directed to the course dashboard, I selected the first unit and went through and left one answer wrong and completed the unit and it froze when saving. I then restarted the server to clear the hangup, now whenever I try to login as the student it hangs and never makes it to the student dashboard window and I need to restart the server to clear the hang. I tried switching to the default coursepress theme and it still hangs. The site is http://affirmativeactionconsulting.com