Sure, thanks for your time. I put the file here:
The file name is: DogTagSnoopV3.g
It was created in Estlcam and I changed the extension to make it easier to get into Pronterface. I can open the file in Pronterface Gcode editing tool, so I know it loads.
I think the reason I can’t load an STL file mentioned above is because I didn’t set up sli3er since I don’t plan to use this for 3D printing right now.