Driver: Dan Watson
I'm pretty sure you will get mismatches. Getting the update installed is easy.
Step one: Did you download the game when you bought it? Or did you get a DVD?
-If you downloaded, download this: http://www.mediafire.com/?2s8n9s4whmmm57p
-If you got a DVD, download this: http://www.mediafire.com/?c95gor5tk2pvcfi
Step two: Once that is downloaded, open up the .zip file with your program of choice (winzip, winrar, 7zip, or similar). Also open your GSC install directory. Something like C:\Program Files\GSC , or C:\Program Files (x86)\GSC if you have a 64bit OS.
Step three: Drag the contents of the .zip into your GSC directory. You should see a similar folder structure. It will ask to overwrite everything, allow it to do so.
You are done and updated.