Tried to change the pickup for an inserter and got a crush:
24623.508 Error MainLoop.cpp:1391: Exception at tick 18762049: The mod Smart Inserters (1.2.11) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event Smart_Inserters::on_gui_click (ID 1)
Invalid direction
stack traceback:
[C]: in function 'newindex'
__Smart_Inserters/scripts/inserter_functions.lua:325: in function 'set_arm_positions'
Smart_Inserters/scripts/selector_gui.lua:530: in function 'on_button_position'
Smart_Inserters/control.lua:222: in function <Smart_Inserters/control.lua:214>
24639.254 Quitting: user-quit.
24640.226 Steam API shutdown.
24640.232 Goodbye