Eeeee, I worked for months on a planet and I got everything solid. I have taken the last several weeks to work on an earth type planet. I was finished with Earth:) I went back to the alien planet I was working on earlier and it loaded a much earlier version of the game:( I was confused and wanted to save the game but now I definitely realize that it is way to many steps to just redo. Are there auto save files I could open to recover an earlier version of the game? I have an Alien planet map as one file. I have another Earth planet which should be fine. Can I go back on the Alien planet and open an earlier version of the game before I wiped all the new changes???