#2 - May 7, 2010, 12:53 a.m.
Personal,
It seems as though you patched the game with the European version of the patches instead of the US version hence the "wrong region" error message you are receiving. Let's try reverting the game version back to its original form per the instructions below and just logging into the game to let the Blizzard Downloader do its thing automatically.
1. Open your World of Warcraft directory located at C:\Program files\World of Warcraft or C:\Users\Public\Games\World of Warcraft for Vista users
2. Open the folder called "Data"
3. Delete Patch.MPQ, Patch-2.MPQ, Patch-3.MPQ and any other file with the word "Patch" in it that ends with "MPQ"
4. Run the repair.exe utility found in the World of Warcraft directory
5. Click the button "Reset and Check Files"
6. The repair utility will say, "World of Warcraft is seriously damaged and will need to be reverted to an earlier version. After it has been reverted you may need to patch up to continue playing."
7. Once the repair utility has completed, you will need to reapply the patch to enter the game.
If you did wish to manually install the patch data if your installation does freeze up, feel free to venture to our patch mirror site below and choose the US version for each patch download.
http://us.blizzard.com/support/article.xml?locale=en_US&articleId=21079