The beta version has been updated once again. It's a small update with big implications.
New Features
Some new footsteps sounds have been added - you may notice that the sounds made will depend on what you are walking/running on.
Main Menu Button
This was a big flaw in the UI design. The game would cause errors if you tried to load a previously saved game after starting a game. It also would not allow you to reload a game properly after crashing into a star. Also, load was disabled if you died on a planet or in a cave.
The solution is a bit of a hack, but it seems stable, and that's what most important. I simply included a "Main Menu" button, which cleverly restarts the game, and allows you to reload your saved game or start a new one. This circumvents a whole bunch of problems I faced while trying to load games while the game was active.
Progress Warning
There is a warning to let players know that their progress will be lost if they go back to the main menu, so make sure you save your game before you try to load another one.
However, to prevent the ruination of otherwise good games, it will not allow you to save the game after your character has died.
I think I've covered all the bases on this issue, but let me know if you experience any trouble with it.