Game shuts off, patches not working

I just bought this game last night. I played for about two hours, everything went fine. Then suddenly it shut off. I restarted my PC and tried again, nothing. I can get into it, but as soon as I try to load my saved game it shuts off. I downloaded all the patches (through 1.6) and installed but they won’t run. Give me patch not installed and patch failed error. Any suggestions???

I have the Yahoo version, and I have my order #. I’m running an HP Media Center PC with the latest drivers.

It says in huge letters on the patch page that the patches do NOT work with the yahoo version!
You will have to uninstall the game entirely, then reinstall the yahoo version.
No idea why it ‘shut off’ the first time though.