HELLO, IS THERE AN ADOBE EMPLOYEE IN THE HOUSE??

I have written a post in the forum that has gone completely ignored except by some guy who didn't bother to read the question, AND I've written to adobe support and that has also gone completely ignored.

I would like to know if there is a list of reasons why adobe digital editions would give this error message:

"the document appears to have minor errors that might cause it to be displayed incorrectly"

and to suggest that if there is not, you provide one. It's pretty hard to guess what, out of everything in the specs, you are giving an error message about. It would be immensely helpful to have a list to check my work against.