“The following SDK components were not installed: sys-img-x86-addon-google_apis-google-22 and addon-google_apis-google-22”

I had the same issue when trying to upgrade Android Studio from 1.1 to 1.2 on Mac OS 10.10.

I solved the problem by selecting custom installation instead of standard. Also we need to select the Android SDK Platform (Lollipop 5.1).