a white screen occurs sometimes when entering a world with any texture pack, I haven't tried several but with a personal texture pack that I have it happens to me that sometimes when I open a world and it's only that world because I open the others and if they open and change sometimes it's another world and to be able to open it again I have to remove the texture pack and put it back if it doesn't give me a white screen where only the entities can be distinguished and then the game closes