Just because it's crashes when you load a save does not necessarily mean that your save file is corrupted. There are other problems that can occur at exactly that same point. For example, if Galciv can't find the graphics for something, say a new ship you're just added, it will crash right after the 100% indicator and right before the status screen.
To see if it has something to do with the save, try starting a brand new game, saving it, then loading again. If you've installed any mods (especially ship mods), remove them and again try both the new save and your old ones. There's also a small possibility that one of your game files have become corrupted, perhaps due to a hard crash at some point, in which case you'd need to reinstall.