The open installation is named at the bottom of the left panel, with
change beside it. Switching to another copy of the game previously meant
finding and editing a settings file by hand.
A What's new summary the first time the editor runs after it updates
itself.
Changed
The game field takes anything that names the installation: the folder named
after the game, the Steam library holding it, its Meteorite\Content\Paks
folder, or a container inside it. It used to accept only the exact Paks path,
which is rarely the folder anyone reaches for first.
A folder with no game containers in it is refused when you choose it, rather
than accepted and then failing when the catalogue is read. An empty Paks
folder left behind by an uninstall is no longer mistaken for an installation.
Opened from the launcher, the editor starts on whichever installation the
launcher is set to. A folder you choose here is remembered and stays chosen.