This may have been addressed previously, but would appreciate any assistance. I have been using my DP-32 for few years with no issues. Today when booting up machine to continue work on a song, I noted a different song appeared loaded. When I attempt to load the song in question that I have been working on most recently, I repeatedly get a "file error" alert. I can load other songs without problem. The issue persists after turning off & restarting machine several times. Thx for any suggestions on how to recover this file...