I'm having a start up issue where after installing bob's mods. It says it cannot find the graphics for the assembly machine 2-east pipe from the base mod, but if uninstall bob's mods, it works fine.
I, too, am finding this to be a game breaker. I've rummaged through the base mod, and it seems that the east-pipe png in question has a different name. Could that be causing the kerfuffle?
I can't say for the original issue from 2 years ago, but I've not noticed that in any recent version of my mod. can you give more details, like, what version of the game you're using, and any other mods?