Bulk train loader/unloader with buffer.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
https://imgur.com/a/NgyEk
Was blueprinting steam engines. I believe miniloader was having this same issue until its recent release.
Please report via the forum thread. Thanks!
i was getting same crash when trying to make any blueprints. NOT using a blueprint that has anything to do with the bulk loader and unloader. Besides the crash its a great mod