My iPhone works with my macbook pro but not with my mac pro. Call forwarding works, but it doesn't pop the apps into my mac's dock. It only does it for one computer not the other.
Have you tried reseting everything like some of the troubleshooting threads suggest? For example, have you tried signing out of iCloud and restarting on all your devices?
In my experience it always takes more then just restarting. It worked for me and a friend when Yosemite came out and I just had it work again last week. I signed out of iCloud everywhere on all my devices, forgot my Wi-Fi on all my devices, restarted every device, connected to my Wi-Fi, signed back in to iCloud, restarted everything again and it worked.