I am having an issue very similar to the one here: Continually consolidating photos. I decided to create a new post, but I am essentially having the same issue - despite not moving the site of the .tpy folder (or any of my images), Tropy keeps consolidating the entire library. Thumbnails are still there. Its a very large project (40,000 items) so it takes a very long time and slows down my machine considerably. I know that the drive where the project is held is local, as are all the images; I had recently had this same problem but fixed it on my own by moving the Tropy file into a local drive. Should I run the test you suggested to the other user?