Sybex Account Registration failed

I have an issue while trying to register for an account on: Sybex Test Banks. Every time I enter my access code, then enter all of my information it brings up an error message page. This message is at the bottom of the page:

Exception information:

Message:
Fatal error: Call to a member function getMessage() on a non-object in /home/sybextestbanks/public_html/application/views/scripts/error/error.phtml on line 9