I'm having this same problem with adding a new calling rule. Tried, safari,chrome, firefox, and internet explorer. IE doesn't even render the page, chrome, safari, and firefox (on both mac and windows 7) let you edit, cancel works, save doesn't do anything. I can add the analog trunk, no problem. Go to add the new calling rule and can't save anything. Been beating my head against the wall on this one. Any ideas? permissions on the server?
Linux localhost.localdomain 2.6.18-194.11.1.el5 #1 SMP Tue Aug 10 19:05:06 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
Asterisk GUI-version : SVN--rexported