Textures for Tripwire, Tripwire Hook, Emerald, and Emerald Ore is not updated. I am using the 64x version for 1.3.1.
Have you ever heard of those devices that shoot holes that transport you somewhere else? What are they called? Quantum space tunneling devices? Yes, I think that's it. I wan't one of those for Christmas. Unfortunately it costs a fortune to get.
Are you sure you have downloaded the last version? Those textures are available for MC1.3.1.
PureBDcraft - THE texture pack for a Comics-themed adventure in Minecraft!