Techguns (on 1.12.2 at least) uses OIS to load the castle dungeon structure parts. That probably needs a patch. I originally used Pipe Blocker, but it completely broke that structure loading resulting in various crashes.

It's not networked, so not RCEable - aside from someone modifying those templates I guess, which I think can only be done by the user anyway?

Pipeblocker blocks all OIS usages, which is why it breaks this. From what I know, I'm confident in saying the mod doesn't need a patch here but someone else may know better.

I wasn't sure, so I reported. Thanks for the info.