[tubedogg]

Here's the thing about vBulletin: if you have a hack, chances are it will affect a query somewhere along the way. Some of them, such as the one to update options in member.php, get edited every time you hack in an option for a user. Same for when a new user registers. Another one is the creation of a new post. What this basically means then is you couldn't install two hacks that add options, which are pretty common hacks.