Factorio Forums

I sometimes experience this unhandled exception with mod Ore-ganizer when using robots to place the a blueprint with modded miners. Usually just redoing the blueprint will avoid the bug, I get the sense it may be timing-related.

Can you please provide a save file and steps to reproduce this issue?

I'm able to consistently reproduce by loading this save and activating roboports. I used copy/paste from the miners to the south to place this blueprint.

Thanks, this is now fixed for the next release.