When trying to edit and save changes to certain templates such as navigation and messages I receive the following popup error and am unable to make any changes. Code: The following error occurred: Forbidden You don't have permission to access /pvp/pn/admin.php on this server. After some research the error seems to be typically caused by mod security so I contacted my host. They told me mod security wasn't interfering and gave me this error from our logs saying that the problem seems to be on xenforos side. Code: POST /pvp/pn/admin.php?templates/save-multiple.json HTTP/1.1" 403 225 "http://mysite.net/pvp/pn/admin.php?templates/navigation.1015/edit&style_id=22" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36 Some of the templates I'm trying to edit are ones I've successfully edited in the past. I recently upgraded my xenforo from 1.2 to 1.5.7, as well as my style and add ons.