Many thanks for purchasing and sorry you are having issues.
The most likely thing is that an image is missing in relation to the file (I’ll have to think about how to better detect / report such issues) although I can’t be certain.
1. strip down the blm file to 1 entry and 1 image and test with that
2. turn on debugging see the end of this page http://quantabay.com/category/documentation/
I would be happy to log in to your test server if you like.