Answered
Greg_S.Correct answer
Community Expert
October 4, 2022
The resolution of your images probably exceeds the maximum size to display thumbnails in the Organizer. If you are comfortable editing the registry, there are instructions in the linked article to fix this problem.
The files may open OK in the Editor if they do not exceed 30k px on either side. You can then resize them. Or you can use the Editor's File>Process Multiple Files dialog to batch resize the files.

