Can't save your Back to the Future game?

Last night I was happily playing Episode 3 to Back to the Future: The Game when I noticed to my dismay that I couldn't save the game... the option simply wasn't there!

Apparently it all comes down to which launcher you use to play the game. If you launch the game using a previous launcher (e.g. one for the first or second episodes) then the game will still work but you won't get the save game option (freaky I know). So, if you want to save the game at some point and not finish the episode in one sitting (which I've read some have), make sure you're using the right launcher!