[Shawn Simpson]

I'm sure you're aware, but the synchronization peripheral gets reset to generic MTC reader if you trash the protools preference. So, if your engineers are routinely doing that (which is very common), they should make sure they reset the peripherals when they restart the system. The only other thing I could think of would be the port. If you're using the digi-serial port on your mix core, everything should be kosher. I have seen a similar problem though when using a modem or printer port configured thru OMS. I hope this helps. Good luck!!