Just downloaded the installer for WoW from eu.battle.net, and the Launcher it crashes after 1-2 minutes (so the new patches cannot be installed).
I've tried looking on Google, but I was unable to find an answer.
1) Make sure you have disabled p2p connections in downloader options
2) If the launcher freezes (in the middle) kill the background task "wow-188.8.131.5236-enUS-tools-downloader.exe
3) If points 2) and 3) dont work for you create a new wineprefix and restart the launcher.