Runs on b2 but not on a real model B

[rjpontefract]

Hi, I'd love to see my real BBC model B running this demo but so far, I've failed to make it work. The DSD works fine in b2 and I used Tom Seddon's BeebLink imager to write it track for track to an 80 track double sided floppy. The intro screens work fine but when it gets to the video part, I get the single line header displayed, the drive steps 3 tracks and it locks up.

I tried a couple of different DFS versions (my usual Acorn DNFS 1.22 and WE DFS 1.44) and both did the same thing.

Is there any chance you've seen this before?