Can't load saved game - well above min specs

[Fridge]

As with a lot of people (it seems), I get a ctd everytime I load a saved game. I was playing a large map on 1920 x 1080 with everything on high, and had absolutely no problems, but when I came to load a saved game, I get either a straight ctd or a ctd with the 'Civ has stopped responding' message.

I've tried lowering res and all video settings, but it made no difference.

I've got:
Dual quad core Intel Xeon E5420
Quadro FX 4600
4GB
Windows XP SP3

So shouldn't be any problem there...

Has anyone found a solution?

UPDATE:
Ok, so I tried starting a standard map, and saved and reloaded that fine. Then I tried loading one of the old large-map save gamed from within the game - and it worked fine. Ie, loading the game from the single player/load game menu crashed; loading from within another game works fine (so far, anyway...)

 

[Pyramid Head]

Same. Game starts normally, then when I try to load - immediate crash with lots of "memory cannot be read" windows popups. But! When I restart the game and load that same game - it loads normally. It seems it crashes only after second load attempt.

 

[D. Minky]

Mine crashes every time I try to load as well. From within the game, or from the main menu, I get a runtime error whenever I even bring up the loading screen. How frustrating... minor bugs are one thing, but bugs that make the game unplayable???