just got the game and!!

hi ther i live in the uk i just got the game and i think its great i got as far as kyro and i thought i would go on the net and down load the latest patch beacuse i have read that this patch fixes some geforce fx5950 problems i have one of those cards and thought i would download it and wen i tried to install the patch and this comes up

Patch Error
Old File not found. However, a file of the same name was found. No update done since
file contents do not match.

wen i tried to play the game again it would not load any saved games or even sometimes start

i reinstalled the game then installed the patch again and the same thing happens

ive lost all my game data so i have to do it all again but i dont mind cuz i enjoy playing it but some info on the patch would be nice on what to do cheers : )...