Need Help SignLab 9.1 - DXF Cut

I have SignLab 9 and am able to cut a dxf imported file.. Could it be there are multiple layers in your file that are not recognized or the simple question is are you "selecting" the object before clicking the "cut" icon?

 

I don't use SignLab, but I wonder if the cutting portion of the software requires objects to be closed shapes, no open paths.

DXF artwork from CAD programs can often be pretty awful. Typically such artwork is badly broken into thousands of little open path segments. Some elements may be very crudely drawn. For instance what's supposed to be a clean circle may be some dirty shape of a bunch of straight line segments trying to look like a circle. That kind of artwork is fine if you need to import a building elevation drawing to use in a printed sign design sketch. It's lousy as a vinyl cutting source. Usually it takes a good vector drawing graphics program or sign making program to create DXF files where all the objects are closed shapes.