Texture bugging the heck out!

So my Minecraft texture is bugging, really, really weird. For now, I have experienced 2 things; about 1 chunk making all the block textures going into a central point (1. and 2. picture), and blocks changing to odly textures (3., 4. and 5. picture). I use my own texture pack, but only changed some records into other music, and putted a bandana on an enderman. Im confused what this is, hope you can fix it.