Session database not working, using cookies does

[eluser]TheFuzzy0ne[/eluser]
What you are receiving, is a database error, and the database appears to be complaining that the userdata field has no default value (as the session class doesn't insert any userdata when the session is first created).

I can only conclude that dropping the table, and recreating it from the schema I posted. It just doesn't make sense why else it would throw that error for you, and no-one else.