Seem to have a problem with 4720.
Game is at turn 21. If you end the turn and carry on either turn 22 or 23 it will say that FO has a problem and needs to shut down and there is a problem withboost_signals-vc100-mt-1_47.dll
Ive put the save on Mediafire, let me know when youve got it (free account)http://www.mediafire.com/download.php?pns3oppbkwpyh6h
EDIT: Ive updated Python to 2.7.2 was running 2.6 started a new game and everything seems ok,im on turn 35 now apart from some of the planets don't revolve, the home planet in the save above is volcanic and ive stared at for a few mins and it just doesnt move (in both Python 2.6 and 2.7) there also seem to some gas giants doing the same lack of rotation.
Just to clarify, what version of Python are you, the developers, using? There seem to be 2 builds, 2.7.2 and 3.2.2