I will add my version soon. My MacBook Pro is back at the Apple store getting the logic board replaced for the 3rd time. When I get it back, I'll post mine.
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Apologies for asking very basic questions, but:
1) Is the lens set to AF?
2) Have you tried activating Live View and focusing that way, using Live AF (not Quick AF)?
3) Have you tried manually focusing (in live view and/or through the viewfinder)?
and also, is the camera able to communicate with the lens?