Sorry to contradict. OM1 mkII can use 14 bit in case of “high resolution shot” files.
Normal raw files are 12 bit (plain sensor use), like those I made one hour ago.
With those files current darktable version 4.6.1 under Windows11 does not work.
Or at least, does not work on my computer, maybe I am missing something…
I explained the error message in my previous message.