Bliz cinematic every login

Hello everyone, installed this couple days ago.
First time I logged i met the Blizzard usual cinematics. Low resolution etc etc.
Changed it and saved.
Played normally for a couple hours and logged off.
Second days i logged in and i actually faced the wotlk cinematic again. Low resolution, super high sound again.

Are there any ways to prevent this from happening?

Thanks a bunch in advance.

Regards,

Eny

Make the game installation folder Not: Read Only.

(please Do Read the stickies and FAQs or 1 of the other 10.000 times somebody asked this without doing that first, before starting thread 10.001 with the same question. Every time you do it, more people will not read it because of all the useless clutter)