Chuck, I contacted HostGator and just got an email from them which says:
Can you please provide us with the login information and link to the script you are attempting to run as well as the steps taken to reproduce the error you are getting? This way we can see the error from your end.
Linux Systems Administrator
I submitted info to the Photopost "Contact Us" at the top of this page. Should I also send my vBulletin login information in reply to HostGator support or should I wait to hear from you or someone else from Photopost?