All you got to do is go at C:\Program Files\DBO_CT_TW\localize\TAIWAN\pack then find the file called lang0.pak press right click then go to properties and then release the box that writes "read only " then if you have the patch launcher press right click and then run it as administratorthen click "click here to patch" then it would write "Patch complete!" then Open DragonBall Online! very simple
If that method doesn't work i don't know for you....