Are you on a windows server?
You can remove this from index.php as your error reporting is set too high
Content visible to verified customers only.
Interesting your not getting the server error about domain anymore.
Okay well I would suggest you edit the settings table directly in Photopost database and update the settings to the proper domain name and set setting 41 to vb3 as I take it thats the one you want to integrate with not vb2
If you need assistance send me ftp and database access and I can assist