Every time when I try to manually unlock all factions, my RTW suddenly becomes incompatible with multiplayer and I can load earlier games, even when I chose to delete all my saved files when I uninstalled it.
In order to play MP you have to have exactly the same files as the other players. If you want to unlock all factions it may be bestr to simply take a copy of your RTW install and modify the files in that copy. Use the original for MP and the copy for campaigns.
I don't understand you pont about 'I can load earlier games'.....
Local Forum Moderator (Total War: Eras Technical Help, Shogun 2: Total War, RSII, RTR, World Of Tanks) - please no PMs
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The only reason you won't be able to load earlier games is if you are running a different exe (you can run RTW mods wusing the RTW BI by using the -mod: switch).
Local Forum Moderator (Total War: Eras Technical Help, Shogun 2: Total War, RSII, RTR, World Of Tanks) - please no PMs
War Thunder TWC Player Names: here