Prior to the upgrade to 10.8 I was able to successfully Facetime between my iMac, iPhone and iPad. Each one has the same AppleID, but a different receiving e-mail address. I am able to successfully facetime from the iMac to iPhone and vice versa. I am able to successfully facetime from the iPad to iPhone and vice versa. But I am not able to facetime from the iPad to the iMac and vice versa. I am able to select the iMac's address. On the iMac it appears a tiny window showing myself (Viewed through the iMac camera) and simple says "(NULL)" and has no way of connecting. If I try to facetime the iPad from the iMac it won't let me. It views the iPad's address as just an e-mail address and not an e-mail address with a camera icon next to it. If I switch the iPad to the address I use on the iPhone...it then works. If I give the non-working address to my iPhone it has the same problem. It must be something to do with Apple not verifying the address maybe? All three devices I am able to send iMessages between successfully. Each iMessage account using the same addresses for the Facetime. I've tried logging out and logging in of everything. Nothing seems to fix it. Thoughts?