Looks like you told Ace, that you were metric!
Also, where is the origin of your drawing (x0 y0)
Did you do anything to offset the path for the diameter (radius) of your cutter. Ace will follow the path and doesn't know about offsets.
And for a piece that is .417 thick, why are you cutting .750 deep?
Just a few questions to help you think about what is going on:})