Teinashu's post in DDC Generation Error was marked as the answer
Look into your xml files. There is a duplicate timestamp in there.
If you remove one of them it should work fine. Currently talking with raynebc about it.
I resaved a song of mine which was also having this issue in an older version of EOF. (1366)
Works perfectly now without editing anything in the xml files.
Teinashu's post in Permission to view dlc threads was marked as the answer
It looks like it's a tag issue.
I searched around and found a topic in that group which used 2 of the same tags as the song topic.
By removing them I've managed to fix it. Though we will search for a way where this won't happen.