Error while running event
miner-placement-aid::on_player_cursor_stack_changed (ID 31)
miner-placement-aid/control.lua:30: bad argument #1 of 2 to 'ipairs'
(table expected, got nil)
stack traceback:
[C]: in function 'ipairs'
miner-placement-aid/control.lua:30: in function
'highlight_should_be_active'
miner-placement-aid/control.lua:77: in function
<miner-placement-aid/control.lua:74>

press "make new blueprint" button = soft crash
does not affect editing existing blueprint

Hi, thanks for the report!
It looks like this happened when you created an empty blueprint, is that right?

yes
pressed button to create a new blueprint from character quickbar

I've just released a hotfix (1.0.3) which fixes the crash.

Thank you for your help!