Mariusrex21052, Have you tried reinstalling the World of Warcraft 4.0.6 Cataclysm patch through the Icecold-wow launcher? If not I suggest you try this. To do it, I suggest you make a Folder and title it WoW 4.0.6 or Icecold-wow. Then, download the launcher and move it into this new folder. After that, open the launcher in the empty folder, you'll see a button that looks similar to the refresh button. When you hover over this button it'll say "Redownload Game Patch" or something similar to that, you'll want to click it. After you click it it'll start downloading the game, then your screen will go black for a few minutes. Just let this happen. After you enter the world (which will take some time) I suggest you just leave WoW open and go do something else because when you download it this way it just puts it what's required to play. It's not actually fully installed. You'll want to let it get to about 50-70% before you really start playing. To check what % it's at you must be in the world, then you'll just hover over the icon next to the red question mark, it should be labeled something along the lines of System. If this doesn't solve your issue then I suggest you open a new topic to get more attention for your issue.
Best of luck!