This is a long shot but maybe someone had a smilier problem. At some point, Continuity stopped working properly on my late 2013 iMac. It works great with all my other machines, and sometimes works one way (from iPhone to iMac) but never the other direction. I created a test user account and it works as expected in that account so that would seem to indicate the problem is isolated to my main user account. The question is, what could affect that? I have tried: logging out/in to iCloud on both devices, rebooting, cycling bluetooth on and off, restoring iPhone from backup, and rebooting after deleting the CoreDuet files. No joy. So before i start making plans to create a new main account - or do a clean install, has anyone managed to resolve this?