LarryM
2
Unless you are carving a raster image, you should check the “Vector Gcode” box.
Be careful using that post processor as it has included a G28 command, which, if set up properly, is ok. If not set up properly it can be a disaster.
Error 1 indicates grbl was expecting a command letter and the letter it got was not valid (most likely the % sign at the beginning).
I don’t use Fusion 360, but you might want to try the post processor talked about in this thread:
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