Thanks so much for looking at this. Particularly as it turned out to be mod-related. I'll try things out without that mod later.

[Edit: I disabled the MinimalWire mod, v1.0.9, and was able to continue my save. Thanks again]

Running the save ("Space Age game1 323.zip") for a few minutes and follow the Fulgora Flyer space platform.

It will transit Nauvis and head to Fulgora, part of the way there it will encounter more asteroids than its guns can handle (screenshot "20250625195443_1.jpg", just before hang).

Asteroids ...