I think you have a bad install. My recommendation is to place all your install and update files into a folder, I use one on the desktop, and reinstall the whole game. For safety, move your game files into their own folder.
This should clear up your problems.
When you install, make sure you install as an admin. To do this, place your cursor on the installation icon and right click, then from the menu presented, select run as admin.
Hope this worksl