zend framework & getIdentity

Hey Folks,

Getting a weird error...

Fatal error: Uncaught exception 'Zend_Session_Exception' with message
'Zend_Session::start() -
/product/Messenger-dev/Messenger/library/Zend/Session.php(Line:480): Error
#2 Class __PHP_Incomplete_Class has no unserializer Array' in
/product/Messenger-dev/Messenger/library/Zend/Session.php:493
Stack trace:
#0
/product/Messenger-dev/Messenger/library/Zend/Session/Namespace.php(143):
Zend_Session::start(true)
#1
/product/Messenger-dev/Messenger/library/Zend/Auth/Storage/Session.php(87):
Zend_Session_Namespace->__construct('Zend_Auth')
#2 /product/Messenger-dev/Messenger/library/Zend/Auth.php(91):
Zend_Auth_Storage_Session->__construct()
#3 /product/Messenger-dev/Messenger/library/Zend/Auth.php(151):
Zend_Auth->getStorage()
#4
/product/Messenger-dev/Messenger/library/Messenger/Core/Db/Profiler/Log.php(53):
Zend_Auth->getIdentity()
#5
/product/Messenger-dev/Messenger/library/Lm/Application/Resource/Config.php(18):
Messenger_Core_Db_Profiler_Log->__construct()
#6 /product/Messenger-dev/Messenger/library/Zend/Application/Bootstr in
/product/Messenger-dev/Messenger/library/Zend/Session.php on line 493

This seems to be triggered by:

 $this->_identity = Zend_Auth::getInstance()->getIdentity();


Has anyone seen this error before?  Its throwing me for a loop....

-- 
-Dan Joseph

http://www.danjoseph.me
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