Hmm, my last one is white. The VSH obviously is looking in the wrong places for the images. Try making sure the images are similar file sizes to the original, the and exact same specs.
If not, try this script instead:
http://piers.jones.googlepages.com/do.cmd
Except, the 'copy /B', the file names and the '01-12.bmp' are all on one line.