Since upgrading to Photos from iPhotos cannot now import anything nor drag and drop. Have checked all permissions are okay.
Have a look at other forum thread-
can photos stored in the new Apple Photos be quickly transferred to Lightroom? I am not at all happy with this new apple "fix".
I believe you have to export your images out of Apple Photos by some method.
I can't find Apples Photos' library to import into Lightroom 6.
Retrieving data ...