Hi.
I have had this issue 2 times, and my colleagues as well. After setting up in director, and even doing shows live with director and IP8, director will hace corrupted the Library/Application Support/TDL or TDLV1.40 folder. Director then crashes when starting up. Then I can move the folders out of the application support folders, start Director again and it will create new TDL folders, but all show, scene and setup info will be missing. Then I can dump back the show file from my backup folder, and load it in director again.
Annoying and quite serious bug.
Regards, Tor