I'm playing Half-Life 2 at the moment. So, your .sav got recognised as a HL2 file, which threw me off quite a bit. I was like, I thought this was about a spaceship not HL3 confirmed? Anyway, I really needed the video from Iwan Plays to guide me through the game. I started off by simply moving the (correct) key to the authorized map, instead of copying. So, the game stopped working all together. I lowered the power of the generator, but it wasn't to the correct value and all the game said was "not correct value". So, that wasn't very helpful. I ended up just watching him play the game.
Now the idea of the game is really cool, but there just isn't enough feedback, for me atleast. Another issue, is that you constantly have to quit and reboot the game, which breaks the flow of the game. Perhaps just have a restart of the game, instead of a full reboot.