Do you have the most recent version? If not try it. Usually when I mess something up, several people let me know and no one else has indicated any problems. If it was just one state, I would suspect I have the transparency set for that state. So I don't think that is the problem. Sounds like there may be a conflict with My Trails and one of the other maps you have installed. If My Trails and one of the other maps you have are using the same name for one of the img files, this can happen. Try going through and disabling you other maps one mapset at a time and see if the problem disappears. I suspect when you disable one of the other map sets, it will work right.