Hi, got this startup error when I downloaded and installed Recursive Blueprints for the first time:

Failed to load mods: Error while loading entity prototype "IR-blueprint-deployer-explosion" (explosion): Key "icon_size" not found in property tree at ROOT.explosion.IR-blueprint-deployer-explosion
Modifications: Industrial Revolution 2

Thanks.

blueprint-deployer uses the icon_size from the base game steel-chest.

If your mods are messing with the base game and then expecting things to still work, you need to file a bug report with the mod author.

Damn, I don't think the IR2 author is taking feedback, but thanks for looking into it.