Can not load session into hooks

[eluser]danmontgomery[/eluser]
Your hook shouldn't be extending the controller class.

IIRC, the "Object of class __PHP_Incomplete_Class" error pops up when you try to reference an object in the session before instantiating that class... Don't know what line 715 of session.php is, it's not the default session library (native session library, maybe?), whatever's on that line might give you/us a clue.