Thanks for pointing this out. I wasn't getting the error myself so hard to know if this fixes anything, but I have applied the updates you provided to record_npc.xml, also found embedded comments in record_pcclass.xml and changed them. I've uploaded the new package to the original post.
Really pleased to hear you're developing this into a S&W MoreCore module, can't wait to see what you do with it. There's loads more that could be done with enough time...