No remote login post update 2.0.1

Hi guys after upgrading to 2.0.1 I can no longer login remotly. I get the following when I go to our server -

Warning: include_once(ZFDebug/Controller/Plugin/Debug.php): failed to open stream: No such file or directory in /usr/share/php/Zend/Loader.php on line 146 Warning: include_once(): Failed opening 'ZFDebug/Controller/Plugin/Debug.php' for inclusion (include_path='/usr/share/airtime/application/controllers/plugins:/usr/share/airtime/application/models:.:/usr/share/php:/usr/share/pear:/usr/share/airtime/library') in /usr/share/php/Zend/Loader.php on line 146 Fatal error: Class 'ZFDebug_Controller_Plugin_Debug' not found in /usr/share/airtime/application/Bootstrap.php on line 126

So something is obviously missing on some lines of the config files but I don't know what. Can someone help?

Our stream is working fine still

thanks so much
John