Just installed the latest OS update,Mar 28 2017, and drag and drop is not working. If I try to grab something from an internet page the site shuts down,reloads and I get a message to send a report to Apple. Anyone else having this issue? Since I've discovered this I think I've had to send a bazillion reports to Apple, I use it a lot. This is os 10.11.6. and it's happening on a laptop and a iMac . This is a Late 2015 4k 21.5 in. Plenty of memory. I don't want to get the latest os because every time I upgrade more of my sound editing programs stop working.