Version 4.1.2.1 was uploaded today. Use the download links in my original post to download it. The only issue addressed was the publishedIn thingie. @arotter's login issue was not tackled since I have no way of reproducing it without communicating with him.
@DrZeuss: I was unable to reproduce seeing the publishedIn tag with items. I saw it with Powers, and for good measure, made the program look for it in nearly all cases, since it wouldn't hurt anything, but I couldn't actually reproduce it for items so I can't be 100% certain I fixed. If you could tell me what book/item you're seeing it on, I'll take another look. In any case, I hope 4.1.2.1 will take care of it everywhere.