Hey there! I saw this texture pack and decided to check it out and noticed something urgent! The back ground of the texture page that you edited is black, making the back of items and blocks pitch black instead of invisible. It does this when you edit it, even if it was originally blank. Are you using Paint to edit the pics? I ran into this same problem and I don't know what to do at the moment, but if I can figure this out, I'll tell you how to fix it up. Okay, I hope I helped so you won't finish and find out it doesn't work correctly. Cya!