Dear Michelle,
This is an unsual problem. Can you enable WP_DEBUG in wp-config? This will display error messages on the screen and it can give us a clue of what is happening.
http://wp-types.com/documentation/user-guides/debugging-types-and-views/
Please let me know if you are satisfied with my answer and if I can help you with any other questions you might have.
Regards,
Caridad
