So you're using a 1.0 savegame on an 1.1 installation? Perhaps you installed 1.1 in the same RTW as you had 1.0 in too? 1.1 is a full installation and should not be installed on top of 1.0...
Have you tried the other solutions in the validation thread? You could at least try to downgrade the NVidia drivers to what you had previously. Also please try to run FileMon to see what is being accessed right before crashing.
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