It's your MySQL version
See here for more info and Lynne from here caught that in the similar message posted just like yours.
http://www.vbulletin.com/forum/showt...L+show+engines
You can contact your host and see if they have other servers that run a higher version of MySQL and if so see if they have PHP5 on it too. Read the rquirements that were stickied either last night or this morning...
http://www.vbulletin.com/forum/showt...m-Requirements
Mike