[DCP-o-matic] Strange colour conversion problem

Hi all, I have a user who is reporting that he has a content file graded to Rec. 709, which he is converting to DCP using DCP-o-matic's Rec. 709 preset. He reports that on a projector he sees pinker skin tones, and the entire image seems a little desaturated. He also tests on Easy DCP player and gets the following results with its various colour conversions: XYZ to RGB (P3): exactly as seen in the cinema (pinker skin tones, desaturated) XYZ to RGB (Rec 709): looks as it should I'm a bit confused... does anyone have any idea what might be going on? Thanks! Carl