Unable to use resource pack properly

So I'm in the "Beta" program right, I'm happy that I'm able to use the experimental features of the game, but whenever I use a resource pack(Shader, 16x16, 32x32 and etc)on a world it suddenly crashes. I don't know what's wrong! I turned the video settings down but I still get the same exact result, clearing the app's data didn't do anything either!