Currently Being ModeratedNov 1, 2013 12:58 PM (in response to melbean)
I found this by EvB on https://discussions.apple.com/thread/4830916
Open a Terminal and type the following commands:
sudo rmdir tmp
sudo ln -s tmp /private/tmp
If your tmp directory is not already there then the second command will give an error - just proceed to the third command in this case.
Once you have done this sequence, reboot the machine and see if your drag and drop is restored."
Not sure if this fixed the problem or if rebooting temerally fixed it again.
Nope did not fix it