As I remember someone had this issue (couldn't select the Multi measure/Angle/height opption with RX-A2080/RX-V2085) and the problem was the MusicCast (not working with it). If you read back you must find that post.Greatly enjoying the AI Surround in my tricky room (very wide Left-Right essentially no side walls) now trying to tweak things by running a YPAO Multi Measure test but it won’t let me select that check box, returning a Not Available error message. I have a 5.1 set up due to room constraints, but i can’t find any reference in manual to multi measure only working with 7.1. The set up is slightly unconventional using Sony Bravia 65 AG9 screen Acoustic Surface (which seems good to me) as front centre, regular Tannoys as front L+R, a Rel Sub and two MusicCast units as rear left and right hard wired in to the LAN, again due to room constraints. firmware etc is up to date. Any advice gratefully received.