Following error is shown at Login Screen just today :-
Warning: session_start() [function.session-start]: open(/tmp/sess_e53c380ed0696f6d6cc7caafc663ce3e, O_RDWR) failed: Permission denied (13) in /home/algadon/public_html/iwt/class_core.php on line 261
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/algadon/public_html/iwt/class_core.php:261) in /home/algadon/public_html/iwt/class_core.php on line 261
And when i enter my credentials of login id and password, then i can't login and just error shows up, which i have attached as attachment, check it.
And resolve the problem as soon as possible.
You will need to clear your browser cache/session data. You should then be good to go. We switched server software, which is the cause for it. We did this a couple other times a while back, but not very often, of course.