This is a bug within the Map Editor. The crash happens when I place an Assembling Machine (of any level) anywhere on the map, select a recipe for it (it doesn't matter which one, I've tried literally all the ones available), and then either click on or even hover over the Output item slot within the ...

Nevermind! I found it! Its in (For Windows, MAC/Linux unknown): C:/Users/[WindowsAccountName]/AppData/Roaming/Factorio/scenarios

(Actually discovered it by looking at the "config-path.cfg", it refers to the AppData/Roaming folder so I figured I would try there.)

Title says it all. I have explored ...