Theme options not working

Hi all, hopefully this will be my last post for a while, but for whatever reason my theme options appear to be malfunctioning this week. I'm unable to navigate to my theme options in the dashboard. They worked before. When I click on one of the sub-headings like "Homepage" or "Services" (URL: http://blogs.worldlearning.org/wp-admin/themes.php?page=functions.php#homepage), it just stays on the default Featured Block options. Broken on separate browsers and computers. Very strange. I think the only modification I made to functions.php at any time was increasing privacy settings for logged in users. Thoughts? Very much appreciated. Once I figure this out, I can finally hide the widget section headings for non-logged in users. Best,

pallaisa