I updated from Concrete 5.4.1 to 5.4.2. Now my site has the following warnings and the top edit bar is missing. I haven't changed any permissions or settings.

Can someone please help!

Warning: ini_set() [function.ini-set]: A session is active. You cannot change the session module's ini settings at this time in /home/ringio/public_html/updates/concrete5.4.2/concrete/startup/session.php on line 5

Warning: Cannot modify header information - headers already sent by (output started at /home/ringio/public_html/updates/concrete5.4.2/concrete/startup/session.php:5) in /home/ringio/public_html/updates/concrete5.4.2/concrete/libraries/view.php on line 791