Okay,
this has been bugging me. I've got a macbook pro (mid 2012) on El Capitan, a Macbook Air (Mid 2014) on El Capitan and an iPod touch 9.3.1.
Air drop problems:
Macbook Pro: Connects to iPod Touch
Does NOT connect to Macbook Air
Macbook Air: Does NOT connect to either devices.
So I'm guessing it's a problem with the Macbook Air at this stage. (I'm just going to add a note here saying that before I've never had to use "search for an older mac" before when connecting the two macs)
I've connected both macs with the bluetooth and they both come up on my devices and I can see they're connecting but for some reason the airdrop function still does not work. I've tried turning the bluetooth off then on, shutting down and restarting, making sure the date/time settings are identical, making sure I'm discoverable by everyone and signing out of iCloud and logging back in again. Nothing changed.
I'm going to add another note at this stage to say that when I first upgraded to El Capitan, everything worked normally, so I'm not sure why this has suddenly stopped working.
I know the two macs are talking to each other as I'm using safari on the macbook air and there's an icon on my tray on the pro that mirrors what I'm looking at. I don't care about handoff (unless this directly affects airdrop) as I never heard of it before airdrop stopped working.
So in other words... if somebody knows anything... um... help?