epmcgill

I'm running a MZ-N707 attached to my desk top computer and have often checked-out files from my PC to my MD. This afternoon, I was in process of just this. All seemed normal, but after transferring two of four tracks, it just quit. Now the MD shops, "BLANK DISK" rather than the usual " "MD>>CD" message. The error message I'm getting from MG Jukebox is "External media/device not found" I've checked all the connections. Am I missing something. Thanks in advance for any help.