@dc42 this is my stop.g file
; stop.g
; called when M0 (Stop) is run (e.g. when a print from SD card is cancelled)
M98 P"/macros/led_alert"
; Turn off all heaters
;Stop Printing (M0)
G10 P0 S0; Turn off extruder heater
M140 S0; Turn off bed heater
M300 S100 P500; Sound beep using PanelDue buzzer, frequency Hz (Snn), Duration (Pnn)
I am not entirerly sure if this is right for e3d toolchanger