It's not that the textures are missing (as in, not present in the game's files), they just are sometimes not displayed correctly.
Last time i tried:
1, Logged into game, character was in Azura. Pink walls all around.
2, Queued for Trueflame. After character loaded, walls were not pink(same spot)
3, Queued back to Azura, character loaded, same spot, everything was OK (no pink)
I was going to start a thread, but just adding that loading ESO64 resulted in much of the same as people are reporting. I'm also getting very odd noise happening. During the Thieves' Guild introduction quest with Quen in Eastmarch (EP), I was getting heavy static sounds, splashing sounds, and odd talking (like Gollum). I basically had to play muted until I made it to Abah's Landing.