Can someone please explain to me why my database has disappeared multiple times? I have built a database which included all thumbnails, added data from user defined fields, etc. And now it is all gone. I looked at the data files stored in "Application Data" and all of a sudden the folder changed from over 11 GB to 8MB. Some of the user fields that I created still exist but they are from a much earlier time. I have backed up my database before but when I restore from it the database looks no different. It is as the backup process does not collect any data at all. The only thing that I am aware of is the application did have a new update for PDT but I can not understand why an update would cause over 13 GB of data to be removed. This is not the first time that this has happen but with my database managing nearly 400,000 images and videos you can understand how long it takes to rebuild all the thumbnails. Please help..............................