Broken Thumbnails in PSE15 organizer
I am using a MacBook Pro OS 10.12.2. I just installed PSE15. I have been using PSE13. Many of the photos imported into my organizer show broken thumbnails. They can be opened in Elements15. They were created in Elements13. I tried editing those photos in Elements 15 and saving and replacing in the original folders on my desktop. I tried to import those files into the organizer directly from the folders on my desktop. They still show broken thumbnails. I have tried to optimize and repair the catalog through File>Manage Catalogs. Nothing has worked. I have searched the forum for answers for an hour plus to no avail. What is the point of the organizer if it cannot be used effectively? Yes, I am ticked.

