Disklavier

Could someone please explain why some downloaded midi files, once 
converted to the Type 0 format do not play on the disklavier?  As an 
example, I can put 10 songs on a disk, all in the correct format and the 
disklavier will play only the first song and show it as songs 1-10 on 
the display.  When you play the disk it repeat the first selection over 
and over.