Hi, I have been scanning photo's using a Canon Pixma MG 5250. In addition to the jpegs that I have imported into iPhoto, it appears to have created thousands of .tiff files, that I cannot move to trash. When I attempt that, I get a message: The item LI-88131434798349.tiff cant be moved to the Trash because it cant be deleted. As I say there are thousands of these and I would like to do a "class action"delete, as they appear to have consumed a huge amount of my storage! Any help would be appreciated.