Error: Input stream not good

I updated my U-1 software to the newest version, so now I'm using XDCAM Drive Utility instead of the old U-1 Utility. However, whenever I put a disk in my U-1 drive, I get the following error:

Error reading metadata from file 'Preds Stnd07205S01.MXF' (input stream is not good())

Does anyone know what this means? How do I fix it? The disks usually come from our cameras which are PDW-F355 cameras.

Thanks.

I also have a PDW-F75 deck. My work around is to plug a firewire cable in the deck to use it as a drive. The disk is fine that way. I only have trouble in the U-1 drive.