Hi Videofan3D.
A BD3D2MK3D user has reported a problem with FRIMSource
here. It seems that with some 3DBD using the unusual view order (base view = right view instead of left), FRIMSource is unable to return the two 3D views correctly. According to the tests the user did, it returns two times the same view, or, if you swap the left and right views in the avisynth script, it returns the two views, but in inverted order. It's very strange. Note that DGMVCSource doesn't have that problem.
Can you have a look ? Perhaps there is something wrong in the script generated by BD3D2MK3D, but it worked fine previously.
Thanks in advance!