Hi mek1,
Only other thing I can suggest is to completely uninstall your autoloader, and then reinstall it. If that doesn't work, I'd look at updating the Symantec drivers, and doing a hardware check on that autoloader. Our MSL6060 would fail Drive 1, and the other 3 would never work until it was either disabled or replaced.
To completely uninstall/reinstall the autoloader:
1. Open BE and delete the drive. Go into Device Manager and do the same thing.
2. Shut down both the autoloader & server.
3. Disconnect the SCSI cable of the autoloader, and start up the server.
4. Verify that the autoloader is not detected in Device Manager, or under Devices under BE.
5. Shut down the server again, and then connect the autoloader.
6. Start up the autoloader, wait until it's initialised, and then start up the server.
7. When the server has loaded the OS, reapply the drivers.