How to rollback to 2.0.4

Hey all. Here are some simple steps to rollback to 2.0.4 so you can log in again.

1. Delete or move WoW.exe file.
2. Run Repair.exe. When the dialog pops up, click the "Check files only" button
3. Run Wow. It will re-apply patches 2.0.3 and 2.0.4 which should not take long as long as you still have the patch files downloaded.
4. Log in.

Worked for me! Enjoy!