Can't export 'Could not load image' in new photos app

Question

Since upgrading to the new photos app I'm having trouble exporting photos within folders where it gives me the error 'could not load image' have tried running a repair on the library but no luck. In iTunes when I go to sync the folder it comes up with 0 which makes me think they could be corrupted somehow.  Please help

Answer 1

For me this problem was caused because I moved my iPhoto library to a different hard drive before converting it to Photos.  I solved this by doing the following:
1)  Opened the original iPhoto library with iPhoto in the original location, and made sure the Photos/Movies that did not work were working.
2)  In iPhoto, I chose File->Switch Library and chose the original iPhoto Library
3) I moved the library to the new hard drive
4) I held down the Option key while launching iPhoto
5) I chose "Other Library" and selected the original iPhoto library in the NEW location
6) Quit iPhoto
7) Open the Original library in the NEW location with Photos
After it converted the iPhoto library to a Photos library, everything seemed to work.
Steps 1 through 6 came from this article:
http://appleinsider.com/articles/15/01/25/how-to-safely-move-your-macs-iphoto-li brary-onto-an-external-drive
Hope this helps.  If you don't have your original Library, I am not sure what to do.