I wrotte a post weeks ago here about this.I had a problem with a Hi-MD unit, model NH-10, i just couldnt upload tracks recorded on Hi-MD mode to the computer.There wasnt any error message, i just clicked then the orange bar was there for 1 second then nothing.I could fix it for a days opening sonicstage in Windows 7 compatibilty mode but after a days it failed again.
Its too bad but i uninstalled Windows 8 and the uploading problem was a big one reason...
Now i am on Windows 7 and everything is fine.
BTW on Windows 8 everything worked and there wasnt any problem with the drivers, i just couldnt upload files.Of course these files could be uploaded on W7.