[SOLVED] 3D MKV MVC works or not?

[Skywatch]

I tried with makemkv to back up a bluray 3d. I selected the mvc content and it all went smoothly. But trying to play this back via kodi/xbian on an Optoma projector (my only active 3d display), it doesn't look right. I get the left half of the image in the left eye and the right half of the image in the right eye, so both appear superimposed on top of each other.

I have tried various settings on the projector as well as inverting sync, but no joy.

So can anyone say what the issue might be or if they have done this with success?