No Validation Errors are shown on Coursepress registration popup

Hi there,
I have Coursepress installed and I'm using the integrated Coursepress theme.

On the registration popup, if there are errors in the form, it gives red x, but no information about what the error is?

I have attached a screenshot. the DIV for the error message is being created, but no text is appearing there.

I have disabled all plugins beside coursepress and the error still remains. This is cross-browser as I've tested on Chrome, Mozilla and IE.

Thanks.