Rather than add this post to the end of the previous one I prefer to start a new one.

From the edited "Readme"

14th October 2019

Since the first release both Ray and I found a number of issues which needed to be fixed, even as late as yesterday.
This has been done, but in such a complex theatre more may well emerge.

This release is a replacement and if you have already installed a previous version you need to re-name your "SPAW2019FinalCut"
folder so that the new one can be installed when the installer runs.
When it is installed and you are happy that there are no problems then the previous folder should be deleted.

Jel

It is easier to do this than to make more patches, and people who have not yet installed "SPAW2019FinalCut" can get an improved version.
I have deleted the original, and the patches from my download page.

The link is here:

SPAW2019FC Replacement

Edit:

From another thread:

Since the original release of the multiplayer package several things emerged during testing online which have been fixed.
Once again a replacement package has been made.
This link is for the replacement multiplayer package:
Multiplayer Replacement

If you installed the original then re-name your "SPAW2019FinalCutMP" folder so that a completely new on can be installed.
Run the downloaded file in your 160 folder

Jel