Fix for continuously restarting WoW Launcher 5.04

Went to play World of Warcraft, version 5.04 and the launcher just kept saying "Downloading updated tools". The blue progress bar would advance, and the launcher would close, and do the exact same thing over and over and over and over and over and over again.

The fix that worked on this Windows 7? Deleted the folder "C:\ProgramData\Battle.net"!