The 5000a receives, transmits and functions fine and until today when I used the installed tuner. When I hit the ATU it goes into tune and after 2~3 seconds the 2.7.2 software crashes. I have to reboot the 5000 and the software and then it works fine until i use the ATU again. Rebooted the computer, checked the firewire cable and it still does it. Anybody seen this before?