ACES 1.1 failure in R15

I've been happily using R15 with ACES 1.03 in both SDR and HDR but when I switch to ACES 1.1 all my footage and my decklink output go black for any HDR ODT!
If I switch back to ACES 1.03 then all is well again.
Weird one
Geoff Boyle NSC
ACES Mentor
If I switch back to ACES 1.03 then all is well again.
Weird one

Geoff Boyle NSC
ACES Mentor