[andrewas]

You can uninstall the AP kit by running the tactics installation program again. In theory, that should return your button labels, assuming Im right on whats causing it which is in no way certain.

Unfortunatley, if the file is screwed your very likely going to have to reinstall BG2 from scratch again to get a clean dialogue.tlk to work with.

This is why, after installing Bg2, ToB, official patch, fixpack - its a good idea to make acopy of your dialogue.tlk and override folder. Get back to an unmodded game without too much hassle.