Disklavier

I am new to the user group.  I have a Disklavier Mark 4.  I have a problem and am looking for 
some help.  I use a MacBook for my MIDI downloads.  When I downloaded MIDI files onto a 
formatted floppy or a flash drive, I got an error message on my Disklavier remote.  I am 
assuming that this has something to do with using a Mac.  Is there something I need to do in 
addition to just downloading onto a formatted floppy?

I saw the thread on the use of QMidi.  Is that something I should be using for the download?

Ben