"Course Manager had an error. Click reload to continue."

I keep getting the error message abobe when I try to add a post in the iTunesU Course Manager. When I click reload, it erases my post and sends me back to the post menu.

I have reset Safari, relaunched safari and even tried using a different mac. I still get the same problem.

I'm using OSX 10.9.1.

Does anyone know how to solve this error message.