(I'm sorry if this was answered elsewhere - I tried to find a post but couldn't.)
Why has drag and drop suddenly stopped working?
I was working on dragging and dropping photos & video from Photos on my MacBook Pro OS 10.10.5 Yosemite.
All afternoon I could select a group of photos from the Photos application and drop them into a sub folder in a folder titled Photos in my Dropbox.
After working just fine all afternoon, suddenly I couldn't drag and drop photos to Dropbox via Finder.
I also could not drag and drop them into Dropbox online (with Chrome.)
When I tried dragging and dropping a group of photos on my desktop the folder would turn blue and the window subdivision outline would turn blue but when I released the mouse nothing transfered. The sound notification didn't sound.
I tried:
Draging fewer photos.
Dragging a single photo.
Dragging the group of photos into the main Dropbox folder
Copy and pasting photos into Dropbox via Finder
Turning my laptop off and on again
Emptying my Chrome cache for the last 24 hours.
Thanks in advance.