I used to get this error tonnes of times on my old/half trashed computer....this game works fine on my old P133, but for some unknown reason my 'new' Packerd Bell cough's up this error every other turn...if it keeps up I would recommend a clean re-install/patch...
At least you don't get the 'giant blue screen' with the 'fatal exception error' like I do
....damn Packard Bell!!!