I have a serious problem with font book and am looking for some help to resolve it. If I try to open font book all I get the the spinning beach ball. I previously loaded some fonts and got an error message so I guess somehow I have corrupted it. Since I can't get it to open I can't remove any files, so I am wondering how to fix this problem. I really need to load a font into it for a project I am working on. Is there a way to delete and reinstall font book without making my problem worse? I have tried repairing permissions and that didn't help. I am running Mountain Lion. Any help would be greatly appreciated.