Not on a valid audio drive message when opening a Pro Tools session

Not on a valid audio drive message when opening a Pro Tools session.

This was seen in Pro Tools 5.1 when attempting to open a session off of an APS SCSI drive formatted with Anubis.
The only supported SCSI formatting utility for Pro Tools 5.1 and higher is ATTO. Reinitialize all SCSI drives with ATTO.
Workaround: copy session and audio files to the internal system drive and unmount the original SCSI drive so that the audio files will be read off the new drive.

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