A curious thing happened today; my project file disappeared. I was at the Medwest Genealogy Center in Independence, Missouri, using TMG v9 to manage my research. When I shut down, I backed-up TMG, and copied the backup file to a thumb drive. When I got home this evening, I turned on my laptop, opened TMG, and the project file was gone. On the opening screen, the box for selecting a project file was darkened. I tried searching for the file using the file extension, but could find nothing. I was able to restore from the backup, but now I am wondering how this could have happened. If anyone has any ideas how I managed this, I would like to avoid it another time.