I have only installed a few IPOffices in Partner mode and have not had any trouble with them. An associate of mine installed one about a month ago and there is a message on x10 saying Backup Failed. Has anyone experienced this? An additional sd card was installed in the system to possibly allieviate this issue. Any thoughts?? I have not been to the site myself, but I do know the version is 7.0.36. The tech that installed it inadvertently downgraded the unit instead of upgrading because he had his bin files set to a different release. Not sure if that would cause an issue. The system works fine otherwise.