0.56 works fine, but with 0.57 shadows have a strong green tint with DP Merrill X3Fs. The red
channel is underexposed according to the raw histogram in FastRawViewer (0.57 vs. 0.56):

This does not seem to happen with DP Quattros (I just tried with one DP2Q raw file).

BTW, in x3f_io.h the camera ids are the same for DP2M and DP3M - this might be a bug, but the values do not seem to be used anywhere and it is probably not related to the issue, which occurs both for DP2M and DP3M:
#define X3F_CAMERAID_DP2M (uint32_t)78
#define X3F_CAMERAID_DP3M (uint32_t)78