When I combine this with Advanced Underground Piping (aka Advanced Fluid Handling and underground-pipe-pack), pressing the CTRL-R and CTRL-SHIFT-R hotkeys while hovering over an underground pipe from that mod produce this error:
Script @underground-pipe-pack/lib/event.lua:37: The mod Disco Science caused a non-recoverable error.
Please report this error to the mod author.
Error while running event DiscoScience::script_raised_built (ID 77)
DiscoScience/control.lua:72: attempt to call global 'showModError' (a nil value)
stack traceback:
DiscoScience/control.lua:72: in function 'addLab'
DiscoScience/control.lua:218: in function <DiscoScience/control.lua:217>
stack traceback:
underground-pipe-pack/scripts/rotate-and-toggle.lua:36: in function 'RotateUnderground'
underground-pipe-pack/scripts/rotate-and-toggle.lua:49: in function <underground-pipe-pack/scripts/rotate-and-toggle.lua:42>
[C]: in function 'pcall'
underground-pipe-pack/lib/event.lua:271: in function 'dispatch_event'
underground-pipe-pack/lib/event.lua:342: in function <underground-pipe-pack/lib/event.lua:305>
If I edit control.lua to move the declaration of showModError to before the first reference, I get a popup message instead, saying
DiscoScience detected an unspecified entity being created. This usually means there is a minor mistake in another mod. Please report this issue at mods.factorio.com/mod/DiscoScience
You can keep playing, but some labs might not animate properly. This message will not appear again during this session.
I don't see a way to attach a save here; please let me know the best way to get one to you if you want one.
