Hello,
Sorry to hear you are having trouble.
Please upload the save game from:
\Documents\My Games\GalCiv4\MPSaves
to a cloud drive service (OneDrive, DropBox, etc) and post a shared link here, please.
I also need to know the exact version of the game each of you has as well as every DLC each of you has installed.
Sean Drohan
Stardock Product Lifecycle Manager