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Have you tried loading other files? If other files load correctly then the problem might be with the format of the file or there may be something in the file that is not being configured correctly.
I would create a small basic design file like a square and circle cutout, then save the gcode for the file and try sending it to the controller. If it works then I would check your design file to make sure it is okay and does not contain something causing the error.
You may have to redo your design file if you don't find an error just to be sure everything is entered correctly.
Your BRAIN Is The Most Important Power Tool In Your Shop. Turn It On Before You Turn On Any Other Power Tool.
A Disability Is Only A Disability If You Let It Be One