If I install the base game and no patches on my Windows 10 computer, everything is fine. When I install 3.1 and or 3.1a I start a "New" campaign with error "No British HQs/squadrons can be properly placed with spacing 2 given the current squadron data and front-line shape." I also tried all the patches with "Firepower" expansion patches still a no go. Anything added after the base game I cannot start a new campaign.
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