Carbide Motion 4 File Loading

That should work, but if it doesn’t send it in to beta@carbide3d.com and someone there will look into it.

In the meanwhile you can use some other comm / control program, either revert back to CM3:

or one of the ones here: Shapeoko CNC Router, Rigid, Accurate, Reliable, and Affordable (there are notes on which ones work well w/ large files)