OS X: "An internal FaceTime error occurred" alert after clicking FaceTime icon in the Dock

OS X Mountain Lion

Download and install OS X Mountain Lion v10.8.4 or later.

OS X Lion

Click the FaceTime icon in the Dock one time, then wait for the application to finish opening.

This can happen if you attempt to open FaceTime a second time while it is already loading, such as by clicking the FaceTime Dock icon more than once.

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