Bluetooth and iMac

It's not a very nice day here this Saturday afternoon, so I've been inside. Yes, you guessed it, playing with my phone. My iMac has built in bluetooth. I forgot all about that. Anyway, I was able to pair the my Droid to my iMac. However, when I try to send pictures to the computer, nothing happens when I click share on the photo. Another window pops up and I select "bluetooth". A box pops up saying it is sending the photo to my computer. Then I get a warning that a connection cannot be made. The phone is set up as discoverable. I guess I'm missing a step somewhere either at the computer or the phone or both. This a not a big deal at all, but if someone might have a solution, that would be great. If not, it get filed under "oh well".