Just got my G68 back from Meridian. It won't play 24/88 files into SPDIF input (using a Mac and USB SPDIF converter).

Playing 16/44 and 24/96 without problem. What am I doing wrong?

G68, G91, BAT 51se tube pre, ATC SCM50 tower (active) fronts, ATC SCM20a rear, Oppo, Apple TV, Sonos, Nottingham TT, Shunyata power condition and cords.