Help, support CPM build

I need some advice on the following issue:

I couldn’t play a DV FEL test MKV (showing woman around 80s) file with the latest nightly build of Omega NG (it results in a black screen), but I could play the same file with CPM’s A2 build. (Both in Player-led DV with Homatics R Box 4K.)

Is there a difference between the two builds that could explain this behavior?