Randomly got this after about 2 hours of the bots putting down concrete

The mod Concreep Redux (2.2.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event concreep-redux::on_configuration_changed
concreep-redux/control.lua:475: attempt to perform arithmetic on field 'active_creepers' (a nil value)
stack traceback:
concreep-redux/control.lua:475: in function 'addPort'
concreep-redux/control.lua:482: in function <concreep-redux/control.lua:478>

Hmmm. That's a new one. I'll see what I can figure out.

Huh. That's... weird. I'll see about adding some guard statements to prevent that, but I'm not sure how you managed to trigger that error. It should be nearly impossible to get into the state needed.

If you're still blocked from playing that save, you should be able to fix it by removing the mod, loading/saving the game once, and then re-adding the mod. (But it should be running code that would detect/fix that error once a second /anyway/.)

Well I don't have any idea what I did.. nor would I probably understand it. I did toggle off and save then toggle back on and its working as of now. Thanks!

Well I don't have any idea what I did.. nor would I probably understand it. I did toggle off and save then toggle back on and its working as of now. Thanks!

Pretty sure this is fixed permanently in the latest releases. Thanks for letting me know!