Today I was trying to use slingshot with out internet. I had some success but got a new error message- while positoning the art work on the canvas after jog mode the program shuts down with the above message and had to repeat all steps, happened three times lost the art work and had to reload each time. At this error the program shuts down eventhough goliath still on with all the sensors green. I could not calculate gcode.
I then started my internet but still use the goliath wifi after few non responding errors it started finally.
Z axis error was easyly fixed by lifting ever so slghtly and rotating.