Communication with the host has been interrupted
We have a 5 Mac office running FM Pro 8.5 in host mode (no server), and have been having this issue for at least a year. Several times a day one of our computers gets the "Communications with the host has been interrupted and could not be re-established. All affected windows will be closed" message. When this happens, other clients are still connected and the host is running normally. Sometimes quitting FM on the client and reopening it will allow us to see the remote hosted file again, but sometimes the client computer must be restarted in order to be able to connect again. At its worst, the host computer must be restarted, requiring all clients to log off. All of our computers are set to never sleep, because I've read that that can cause this issue, but that has not helped. All computers are using wifi, and we have been through 3 or 4 routers (just got an Apple airport extreme, hoping it would help with this, but no luck there).
Here's some info on our setup:
Host Mac: iMac, intel core 2 duo, MacOS 10.5.8, FM Pro version 8.5v2
Client 1 (has problem): Mac Mini, intel core solo, 512MB, 667Mhz, MacOS 10.5.8, FM Pro version 8.5v1
Client 2 (no problem): Mac Mini, intel core 2 duo, 1GB, 2 Ghz, MacOS 10.5.8, FM Pro version 8.5v1
We have a couple of other minis, one seems to never experience this problem (Client 2 above), the other very rarely does. We have been using FM on Macs since FM 5. Any help resolving this would be greatly appreciated.