Posting this here in case it's related. I changed my hotkey to F since alt is taken already by a couple of things and every time I try to use it I get this error and crash to start EDIT: It does it with other keys too, not just F
The mod Queue to Front (Alt+ Mouse Button) (0.1.0) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event queue-to-front-button::front-craft (ID 188)
queue-to-front-button/control.lua:2: attempt to index field 'selected_prototype' (a nil value)
stack traceback:
queue-to-front-button/control.lua:2: in function <queue-to-front-button/control.lua:1>