Upgraded from 2.11 to 12 with Upgrade Tool, Advanced Settings Won't Save Anymore

I upgraded from 2.11 to 12 and now I can’t save anything with the checkmark in Advanced Settings. I click it but it doesn’t load or anything. Any ideas?

http://wiki.freepbx.org/display/GHWF/Providing+Great+Debug#ProvidingGreatDebug-FreePBXDebug

amportal a dbug doesn’t provide any info. I updated my FreePBX recently using the upgrade tool and I can’t save any Advanced Settings while using Firefox. The checkmark will show up, but clicking on it does nothing. It works in IE11 and Chrome 43, but not in Firefox 38. Should I bug this?

I had the same problem after my upgrade. Like kg4ysy said…it wouldn’t work in firefox, but IE and chrome worked like a charm.