WotLK Game starts freezing after launching it and then just closes help pls!

[Gwydark]

hello I am a returning player andi dowloaded woltk with wod chars and when i run it starts the music and black screen then after that the picture of lichking pops up and the music still playing and then it just closes it self i need help anyone?

[Thorbjorn]

Download classic launcher = all your current and future problems will be solved.