I got a FOTODIX Pro NEX adaptor to try using my medium format lens on my A7r and it worked like a champ.
I finally got around yesterday trying it on my older NEX-7 and kept getting the same error message that the lens needed to be reinstalled. I ended up trying this on both my IR and non-converted NEX and keep getting the same message.
Not a huge deal other than I wanted to see what the MF lenses would look in IR. Is this a non-starter? Funny it works well with the A7 and not on a NEX.