[tbworld]

Method:1
---------
Enable the products one by one until you find the product that is causing the error, then check the modification section for an updated modification. Usually the modification's thread can help there, as others most likely ran into the same problem.

Method:2
---------
The warning line: "includes/class_postbit.php(345)" is the location of the plugin hook. Look at the code in "class_postbit.php" line "345" to get the name of the hook. In this case the hook name is "postbit_display_complete". On the plugin page sort plugins via the hook name. This will give you an idea of the plugins that might be causing you trouble. On the offending plugin the error will occur on line '61' where you will find an ereg() function call.

Replace the deprecated code with updated code or the vBulletin modification to an updated modification.

-----------------------------------------------------------------------------------
In most cases ereg() can be replaced with preg_match. Look at the PHP manual.
-----------------------------------------------------------------------------------