Dfort,
I have now briefly tested your latest two builds at 5x-magnification:
crop_rec_4k_mlv_lite_snd-original.2018Jan25.100D101.zip
crop_rec_4k_mlv_lite_snd-updated.2018Jan25.100D101.zip
I can now confirm your and Danne's findings. The sound file gets properly saved only if recording is manually stopped before buffer is full. If camera is left to record untill it stops by itself, the audio is not properly recorded. Just an empty sound file is created.
One more observation: While it is great that the maximum resolution (2520x1080) is back now and it works without hiccups, in the normal uncropped lossless modes, at 1736x976 resolution, the focus pixels are back. So, if we stay with that 2520x1080 max. resolution, the focus pixel maps will have to be corrected again. I hope, this will not be a problem.
The hicccup issue is gone and this is fantastic. Thank you again, Dfort, for your genius work !!!