My game crashs when I move my colony ship to sight of certain planet.
I saved the game just before my colony ship's sensor catchs the planet.
Changed some graphic settings, load the game , move the ship , crashs..
change something else, load move, crashs.. etc

I know there's a class 14 habitable planet in there because I exploered the map before I started to really play.
(generate the map, save, explore the map,then load)
So the first time I explored the map , there were no problem getting in the range of the planet.
But now getting near the planet crashs my game. Is my save game corrupted?

I'm using nVidia 6800GT ,Pentium4 2.4Ghz, SB audigy2 ,plenty of ram/hdd , and newest drivers.
I like this game and really want to play.
Any help is appriciated.