-After pressing "Shift" + "Track Edit/PGM", select the VF08 Demo program, just like you were going to work on those tracks.
-Press "Setup" and scroll down to Rec Protect.
-Hit the "Enter/Yes"-button. Change "On" to "Off" with the jog shuttle and then hit "Enter/Yes" again. "Exit".
-Try erasing the program again. Should work.
The demo file is 42MB.
I use the Rec Protect just to make sure i don't erase the wrong program by mistake. I had my car stolen once. Kind of the same emtpy feeling: ".............. i parked it here yesterday......but now.......arrrrr.....maybe i parked it in the neighbors garage?????".