Well that's good to know for future reference. I have yet to see the catalog error that many others have, so I didn't know how to go about troubleshooting that one. Thanks for the update, hope it helps others with the same issue.

I just fixed this problem by deleting a question mark in one of my page names. A suggestion would be to validate this field before people complete the name in the page so people don't get frustrated and have to scour the internet for an hour to troubleshoot.