Please feel free to take a look. I can't use the VASL.mod out there because those released VASL mod builds are still using the MappedBufferedImage.class that you took out in Vassal 3.2. Now I think I realize why I am the only one who have seen it.
The VASLmod file that I use for testing is built with a modified ASLBoard.java in the ASL-src tree that removes its dependency on the missing MappedBufferedImage.class. For some reason, I thought that you checked that change into ASLBoard.java but then as I just checked, it is still not there.
I am also attaching all the Bad Data error outputs.