Thanks for the detailed response.

I couldn't find anything about consistency in any of the API docs, is it something we should be keeping in mind when developing mods? or is there anything we can do to help prevent it? I am not the dev of this mod but I have my own projects so would be good to know ...

Update:
Removing the offending pipe causes another wdm_ship_pipe to error instead.
Removing all wdm_ship_pipe from the surface prevents crash.
Disabling consistency-scraper in "the rest" settings prevents the crash.

No idea what the setting does though so not sure if it will break anything else. Is ...

Log: https://drive.google.com/file/d/16FXjHO_f_qofVk-HF8DOgX7zQ-QVdjlq/view?usp=sharing
Savefile: https://drive.google.com/file/d/1j1H7AvVnVssZDfycbyfn9Opt3fHE4oZa/view?usp=sharing

Crashes to desktop a few seconds into save with no interaction (on warping).

Log stacktrace says
95.842 Info ...