With vb 3.8.7, the database is returning an error when a user is registered:
Database error in vBulletin 3.8.7:
Invalid SQL:
SELECT * FROM `vbsso_users` WHERE `vbuserid` = LIMIT 1;
MySQL Error : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'LIMIT 1' at line 1
Error Number : 1064
Request Date : Sunday, November 25th 2012 @ 01:06:21 PM
Error Date : Sunday, November 25th 2012 @ 01:06:32 PM
Script :
http://site/register.php?do=addmember
Referrer :
http://site/register.php?do=register
IP Address :
Username : testaccount
Classname : vB_Database
It looks like userid isn't passing correctly to the query.