Hey guys, I always used to drag attachments from mails in my Mail app directly out of the email and into a folder. Similarly, I'd drag photos from iCloud in iPhoto directly out from iPhoto and into folders. I used to do this quite often as I use it for work. Now all of the sudden I can't drag any of these files out any longer. If I drag a file out to the desktop and let go, the file isn't pasted over. It has always worked, but since yesterday it stopped working. What could be causing this?