Ok... Very interesting log (for me

).
First it shows that you manage to reache the main menu and load a scenario, I did not get that. So this is not a directX problem, even with a message 'renderer exception'. So we can evacuate problems around the video card.
You confirm you reach main menu, right?
Second, 'access is denied'. Typical message about the operating system preventing file writing operations. We are definitively in a 'user account' problem. Windows is preventing the game to writes or even opens the turn files.
Generally we advise people to install the game on another partition, D: for example. If this don't work, be sure you are in admin mode, and/or do a 'run as admin' on the executable. If this don't work, shut down the internet and make a test with the UAC totally disabled (User Account Control), this is a novelty of Vista and beyond that can prevent files from being opened or written.
If this don't work, darn...That would be a premiere. Anybody with this problem managed to find a solution so far. I hope you will too.