Hi! This mod appears to occasionally cause a crash when changing inserter arm positions.

It doesn't happen every time, more like once every 10-20 hours of gameplay or so. Not sure if it can be reproduced reliably...

The mod Inserter Configuration (1.1.2) caused a non-recoverable error:

Error while running event Inserter_Config::on_gui_click (ID 1)
Inserter_Config/control.lua:117: attempt to index local 'inserter' (a nil value)
stack traceback:
Inserter_Config/control.lua:117: in function 'set_arm_positions'
Inserter_Config/control.lua:378: in function 'on_button_position'
Inserter_Config/control.lua:434: in function <Inserter_Config/control.lua:429>

I have truble reproducing bugs people report here, the plugin never crashed during my personal plays.
I have added some additional sanity checks and uploaded a new version, hopefully this solves your issue.

Thank you <3