A quick hotfix to resolve an issue that caused the close button for the build menu to fail for new accounts. The bug was actually related to the settings file not setting up properly the first time the game was loaded and causing the save game to fail.
if you started a game and hit this bug, it's best to start a new save.
Apologies for the bug. This is something I should have caught, but didn't happen to me because I already had a settings file from previous play-throughs. Thank you everyone who sent me log files to help track this down! I just added "delete settings file" to my build test checklist.