It definitely sounds like a connector issue. I'm sure you've shut down your server and turned off all the computers, and then rebooted everything? Have you updated AC recently? Have there been any changes made to AC prior to the problem starting? I actually have found that when I email and call Updox and let them know that my office isn't functional because of an issue like that, they end up calling my office within a few hours and then help me by phone. Still, the best support hands down is Amazing Charts. I often do the live chat with them about AC/Updox problems, and AC solves the problem by remoting in. It's such a pain, and it's SO time consuming. Good luck! Don't give up!