As you splitted your screenshot, it's not clear what exactly they should show.
- cpgissue_a.png shows the files on your server.
- cpgissue_b.png displays the radar icon. When do they appear? Please hover over the icon to get more information.
- cpgissue_c.png lists the files in the batch-add interface. As none is selected, you probably already have added them to a different album.
- cpgissue_d.png displays the dupe icon. I assume they appear if you manually select the files and try to add them to the desired album.
- cpgissue_e.png displays the edit files page, without any files.
You could use search.php to search for the file names. But as you've a lot of pictures with that file name, you'll get a few hundred results. As no thumbnail images exist in that folder, you could search for pictures with missing thumbnails. Or even better, use a tool like phpMyAdmin and search the pictures table for the file path "uploads/cast/Gage_Golightly/Events_and_Appearances/2012/May_23_Teen_Wolf_Premiere_Screening/".
Ah, finally! I'm getting somewhere with this.
I couldn't show you any more information because that's all I got. Hovering over it doesn't give me anything, but I do know what that duplicate icon stands for, so that way I knew what it was, I just didn't/don't know to which album they're added, 'cause you said so yourself, and I quote "As none is selected, you probably already have added them to a different
album".
And because of that, no files were added - because when I manually select them, it says that no files were added.
I'm gonna search for the path and try the methods you've mentioned above, and I will let you know if I was able to find them or not.
Thanks for taking the time to help me out!