I was working yesterday for more than 5 hours. Suddenly the BT closed and the contente in my file disappear.Can recovery my job?
Did you save your document? If so, it should be where you saved it. And Time Machine should have your document, assuming that you did save it at some point.
If you never saved your document, the Unsaved file should load when next you open Tinderbox, and/or it should be listed in File ▸ Recent Files