Hi

Let's back up a bit:

The slicer generates the gcode. The code is sent to the printer. The firmware executes the gcode.

If something is not happening then:

1) The gcode told it to do what it is doing.

2) The gcode did not get sent to the printer.

3) The firmware is not executing the gcode.

If the extruder motor is not moving when it should, then it's got to be one of the above. If the extruder *is* moving and noting is coming out, that's a bum extruder.

Bob