Is there a setting, command line switch, Steam trick, etc. that will let me run GalCiv3: Mercenaries after Steam has already installed Crusade? I remember the launcher for GalCiv2 having a way to switch what game you wanted to run but the current launcher doesn't seem to have that feature.
I've got a save from the previous version that I've put a fair number of hours into and would like to see it through to the end. The saves are still there, in Documents/My Games/GalCiv3/Games, but the Load Game button is grayed out in the main menu. While not unexpected for a new expansion, it certainly is frustrating.