I played for quite a while after installing, working on fluids, before trying to adjust inserters. I didn't see the grid, so assumed I had to turn it on in settings. While in settings I changed several things. (Thank you for including the word "inserter" in each setting. It made searching much easier.)
It crashed sometime between leaving the setting screen and trying to place an inserter. Sorry I can't be more specific. I was focusing on the game.
5644.082 Error MainLoop.cpp:1391: Exception at tick 15162435: The mod Quick Adjustable Inserters (1.1.1) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event quick-adjustable-inserters::on_selected_entity_changed (ID 54)
inserter-throughput-lib/inserter_throughput.lua:261: attempt to compare number with boolean
stack traceback:
inserter-throughput-lib/inserter_throughput.lua:261: in function <inserter-throughput-lib/inserter_throughput.lua:250>
(...tail calls...)
inserter-throughput-lib/inserter_throughput.lua:658: in function 'pickup_from_position'
inserter-throughput-lib/inserter_throughput.lua:684: in function 'pickup_from_pickup_target_of_inserter'
inserter-throughput-lib/inserter_throughput.lua:924: in function 'make_full_definition_for_inserter'
quick-adjustable-inserters/control.lua:2300: in function 'estimate_inserter_speed_for_inserter'
quick-adjustable-inserters/control.lua:2318: in function 'update_inserter_speed_text_using_inserter'
quick-adjustable-inserters/control.lua:2397: in function 'update_inserter_speed_text'
quick-adjustable-inserters/control.lua:3882: in function <quick-adjustable-inserters/control.lua:3877>
5667.886 Quitting: user-quit.
