I had the same issue as you, Bigby. I switched to Classic WBlite and it worked.
Converting the ADF to HDF was very easy, too. I used ADFopus to create a blank HDF and I copied the files with adpro. On xbox, Ihave DH0 for the system and DH1 for the game and it running fine. Except the eventual bugs regarding the emulator core, WHDload and performances issues. But this is another subject.