+1 for the "reboot the VMS" solution previously offered. The reboot eliminated the VMS_1 and VMS_5004 error messages I was receiving on both my iPhone and iPad. FiOS Technical Support was unable to resolve the issue(s) via telephone; I was advised to create a "ticket" using the My FiOS.
A point of reference re: creating "tickets" via the App... The "Description" field for the ticket, apparently does not like "special characters." When I typed in the error message as "VMS_1" or "VMS_5004," my entry was rejected. To submit the ticket, it was necessary for me to remove the underscore.