just a trick to load uncompressed savegames.
 

When you use a game mode with "compress savegame = false" in its settings, there is a little problem to load the saved game.

To load them when you launched SE, you must first begin the creation of a game with the mode it uses, so SE loads the data files. (click on new game, select the mode and cancel)

I think the problem comes from default value of "true" used during the initialisation of SE.