Romlister its a great tool to create xmls, but as far as my own experience,it outputs weird characters in the xml and therefore (in my case) hypespin wont read those xmls, so what i did was to find for any out of context characters and mass delete them . One example is, i found "&" on several game descriptions, all i did was open the xml in notepad, use the find and replace option, to find & and replace with nothing. After that, xml loaded just fine in hyperspin.