I am using Mastercam X3, just installed and something is very wrong.

If in mastercam I instruct to mill 1" in the -X direction, the NC instructs to mill 1" in the +Y direction, and instead of 1" in the -Y, NC instructs 1" in the +X!

BUT the drill works exactly as it should.

Backplot works fine. Verify works fine.

I change the machine and post processor with the same screwed up result.

I'm hopelessly lost. Please help!!