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[2.1.17] Crash (FluidBox.cpp:432: !this->buffer was not true)

Posted: Tue Sep 08, 2026 6:16 pm
by protocol_1903
I'm experiencing a weird CTD with editor mode and the mod I'm working on, particularly it's the "instant blueprint building" setting. I'm going to keep digging around with the cause on my end, I have a feeling it's trying to do fluid something with an entity that doesn't have a fluid segment, possibly a ghost or an entity with no connections.
  1. Load vanilla factorio 2.1.17 with the attached mods
  2. Load the attached save
  3. Enter editor mode and ensure "instant blueprint building" and "instant deconstruction" are enabled
  4. Pipette a pipe
  5. Ghost-place a pipe on an existing pipe with fluid
  6. CTD

Re: [2.1.17] Crash (FluidBox.cpp:432: !this->buffer was not true)

Posted: Thu Sep 10, 2026 7:16 pm
by Rseding91
Thanks for the report. This is now fixed for the next release.

Re: [2.1.17] Crash (FluidBox.cpp:432: !this->buffer was not true)

Posted: Fri Sep 11, 2026 11:38 pm
by protocol_1903
What was causing the issue? Was it attempting to set something fluid related on a ghost?

Re: [2.1.17] Crash (FluidBox.cpp:432: !this->buffer was not true)

Posted: Sat Sep 12, 2026 12:13 am
by Rseding91
Yes. The new fluid functions didn’t reject adding fluid to ghosts.