I appear to be missing something. I've upgraded from version 8 to v 9.13545 SP1. Since the upgrade I'm unable to save Advance or General settings. When I do I get either "The entered operator extension is invalid. Please enter another value and try again." or "The entered conference extension is invalid. Please enter another one and try again. We had/have the conference extension set and and it is working when I look at System Extensions Status I can seen all the ConferencePlaceExtension with the first one being the primary and the same entry set in Settings -> Advanced. I've tried all different combinations of numbers and I've tried to enter numbers that are not associated with a DID and were associated etc. I've tried to reboot etc. To upgrade I backed up and removed version 8 then installed version 9 with a restore during the wizard installation. During the upgrade the Mail setting for sending voicemail were erased and I can't set them along with other setting due to the error message. Any help would be appreciated.