RESOLVED: Can't make ANY changes in the Advanced Settings module

Everytime I try to make ANY change to my PBX, i get the following error:

Ajax Web ERROR: When saving key AS_DISPLAY_READONLY_SETTINGS: parsererror

the AS_DISPLAY_SETTINGS is obviously changed to match whatever settings I’m trying to make…

Any one have any ideas?

Linux Distribution: (Redhat CentOS release 5.5 (Final))
FreePBX version: (2.9.0)

Thanks a bunch

Resolution: Changed to Google Chrome, works fine now, THANKS!!

Try a different browser? Say chrome?

In my experience chrome was the problem. In every other browser it worked fine except in Chrome. After updating to Freepbx it started working in chrome!