This error means the machine is overloaded in terms of network resources (network buffer space or number of connections). Usually the cause of this is a misbehaving application on the machine that is (or was) leaking network resources by not freeing them when they are no longer needed. The command ...

Took a shot at salvaging the save. Managed to get it to keep saving at least until 45:10 (did not try any longer). It seems like corruption with the electrical network somewhere was causing the crash so i removed all the electrical poles and replaced them using the editor. Hopefully it will last you ...