One of the most common issues that people have run into with using NHQA is the DuplicateMappingException. The root problem is that you are adding both the DLL (which contained embedded resources mapping files) and the mapping files themselves.

Well, after getting tried of answering that question so often, I decided to fix the issue, and let NHQA knows about the issue, and try to resolve it. The fix is in the repository now, but I would like to have some more input before I would release it.