just tested and
I confirm, the "mxf 3D" does not work with 0.30 cli   (works with 0.26 )

The command for j2c is :  (125 mb/s for each eye, and tiff  in X’Y’Z’ colorspace) :

    opendcp_j2k –i yourtiffpath -o yourpathforj2cL -r 24 -x -b 125

for mxf :
opendcp_mxf –i yourpathforj2cL –o example2D.mxf -n interop -r 24    (2D)
or:
opendcp_mxf –1 yourpathforj2cL -2 yourpathforj2cR –o example3D.mxf -n interop -r 24  (3D)

PS: tiff files must be in 2K D-cinema resolution
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EDIT 05-dec :
just tested and
I confirm, the "mxf 3D" does not work with 0.30 cli   (works with 0.26 )