Some of you may have been getting an error message when trying to load a previously saved game. This was due to some variables not included in older versions of the game.
One option was to erase your existing "Apes.sav" file, but that would mean deleting your progress and starting fresh...a crappy option if there ever was one.
The latest update has a workaround though, and it should fix the issue when loading a saved game, even if it's an older file!