Booksmart deleted my book!

After working on my book for over a week and regularly saving the book, while working on my book today I went to click the save button and accidentally clicked something else.  Booksmart then crashed and when I went to load it my book was nowhere in the list!  I tried looking for all of the .book files on my HD but my book is nowhere to be found!  I am running version 2.9.1.32043.