Ty for your response. Unfortunately for me, that author (like so many others) seems to have stopped doing Factorio stuff over 3 years ago. I did end up "making the error go away" (and don't get mad at me please) by going into prototypes/infected.lua and deleting the entire section that mentioned infected artillery. At least that's what I think I did. I did not notice any ill effects. Last night though I updated your mod without remembering my...edit...and naturally the error came back. Performing my same edit simply brought up a different (and more deadly-looking) error. If I knew how to mod I then I would know what I am doing but since I dont...guess I will see if slashing off other pieces of code will work.
