Vanilla texture pack is broken

Put the summary of the bug you're having here

What I expected to happen was...:
I expected to see anvils, carrot & potato crops, cocoa beans, tripwire (anything from 1.3 and forward) normally

What actually happened was...:
Anvils, carrot & potato crops, cocoa beans, tripwire (anything from 1.3 and forward) were all pink squares.

Steps to Reproduce:
1. Install Minecraft.
2. Play game.
3. Textures are broken.