I have found my save games. I use Corion 2 to edit the planets and systems and then save it as save1.gam and save2.gam. However, when I stast up MOO2, I don't see anything changed. Does Corion 2 not work with the windows 7 or with this GOG version? HELP
I just want to repeat , I do seve changes to all save game files and still see no effect.

The changes to the planets are only usually visible next turn

Nope, I went through a few turns and noticed no change in the planets..
Can anyone give more specific advice on how to use the corion2 editor? I am really having a problem with it not working.

You were absolutely right. I needed to run the program as administrator. Duh

That, or install your games somewhere other than the default location (such as C:\Games).

For me the problem is that the game crashes on "Turn" after loading the edited save file.