On the issue of not enchanting TC items, if you add looting to the tools with lapis, it should then let you repair and add enchants to the items with the enchanting table..
You may be able to delete your character file from the world folder. You will lose all the items you have on your character, but you may be able to connect.
I have done this a few times when I get odd stuff happen and it only effects 1 person.