I am having a similar problem...
With the additional issue of having these lines at the top of the exhibit editing pages:
Warning: Cannot modify header information - headers already sent by (output started at /home2/solomoo0/public_html/ndxz-studio/index.php:2) in /home2/solomoo0/public_html/ndxz-studio/lib/access.php on line 80
Warning: Cannot modify header information - headers already sent by (output started at /home2/solomoo0/public_html/ndxz-studio/index.php:2) in /home2/solomoo0/public_html/ndxz-studio/lib/access.php on line 81
Warning: Cannot modify header information - headers already sent by (output started at /home2/solomoo0/public_html/ndxz-studio/index.php:2) in /home2/solomoo0/public_html/ndxz-studio/lib/template.php on line 65
Also, my friend tells me that when he's at home, on his mac with safari, going to the website brings up a malware warning. I have a feeling these two things are not coincidental. I am seeing everything just fine on a PC with Firefox, the only problem is I can no longer edit anything because it keeps kicking me back to the login page. Any help in determining what files i may need to replace would be so much appreciated. Also, should I contact my webhost about a potentila security breach on their end?
Thank you. Site.