I have a product that I made with the solid model analyzer that is placing lines in the shape of a rectangle at the 0,0,0 coordinates. Separate lines, not polylines. The rectangle measures 1/2" w x 3/4" h.

I've been able to determine that it is being created by the interaction of the DADO machine token on my studs with the top and bottom plates, but I cannot figure out why it's being created. I've attached the saved XLS file of the product if anyone wants to take a look at it and see if they can figure this out. I've removed all external name references so you should be able to draw the exact product that I have without any errors. The materials in the material column are true to their stated thickness.

Edit: This is a curiosity question, not something that is preventing me from moving on with this project.