I think there is more complexity here than we might first think.
I posted this in the SGOTM maint thread, but I think it has an audience here as well ...
The dual install details are here:
The thread is
http://forums.civfanatics.com/showthread.php?t=232115
The key starting post is (post 12 to post 19)
http://forums.civfanatics.com/showpo...6&postcount=12
Here is a description of the issue for those unfamiliar ...
The issue is that pre BTS, we had vanilla 1.61 and warlords 2.08. Installing BTS automatically patches vanilla to 1.74 and warlords to 2.13.
The wrinkle is that the HOF mods are patch-specific: an HOF mod designed for 2.08 won't work with 2.13.
And the XOTM are HOF mod-specific ... has to run in the mod that created it. This meant that a WOTM made with an HOF mod designed for 2.08 won't run on 2.13, so if you had unfinished games in 1.61 or 2.08, you either had to not install BTS until those were done, or generate a dual install of each game, one in the old 1.61 and 2.08, and a second copy that would update to the 1.74 and 2.13 when you did the BTS install.
Also, if you ever want to go back and replay an old XOTM, you would have to keep a dual install of the version for that game.
That was then, pre the 3.13 BTS patch ... now, 3.13 apparently changes shared assets. So ...
Newer XOTMs and SGs may require 3.13 versions of BTS, Warlords, or Vanilla (or newer pitboss games?), while older XOTMs and SG's (or older pitboss games?) might still require pre 3.13 versions of BTS, Warlords, or Vanilla. Or maybe only if HOF mod is being used (which would exclude pitboss I assume)?
If you need to be able to play old 1.61, 1.74, and now 1.74post3.13 games (or only if using the HOF mod?), then you may need a triple install of vanilla.
If you need to be able to play old 2.08, 2.13 and now 2.13post3.13 games (or only if using the HOF mod?), you may need a triple install of warlords.
And if you have pre 3.13 BTS games, then I assume you might need a dual install of BTS, one pre 3.13 and one post 3.13 to continue to play the old ones.
Ouch.
And if you already updated and need to go back ... super ouch.
@ Staff: correct any errors I have made here, but unforturnately I think I am right, or close to it.
dV
BTW ... 1500th post!