It does appear that there might be an issue with the code processing the v2 tags. On several of my MP3's it will not show anyinfo on the v2 tags. even though it sets the hasid3v2 property to true. On some of my MP3's it does come back with the correct information though. I would suggest you download a MP3 editor and set the tag. I used audacity on one of the MP3s that originally did not show a v2 tag, edited the tag, re-exported the mp3 and now it shows the v2 tag.