When using the full tool change wizard and you get to the last part “Resume Cutting” gsender just hangs. I have noticed that if, instead of pressing run at this point in the wizard, you cancel out of the wizard and simply press the Start button in main screen things work as expected. Although this works, it’s quite a lot of additional button presses.
I should say I’m using V1.6.4 on a Window machine, sending to a Shapeoko.