[0.17.46] Crash loading MP saves: "this->reservedFor.isZero() == (this->reservedForCount == 0) was not true"

[BrownSnake]

Hi there,

I have two current active save games. Once crashes when loading the save, the other works fine.

I've attached a copy of the output log when the crashing occurs, with username & savename redacted (named after real life names etc).

Let me know if you need anymore information.