One early symptom was a message on the message log telling me that I had the
incorrect tray information loaded, and to check the hardware.ini file. I
checked the file and it was OK. Powering down and then booting back up solved
the problem for a while. Finally, though, the A/S would not go through its
initiate sequence when you flip the power switch - that small X-Y movement
right after the switch is flipped.