I'm sure most of us got the AE email this morning mentioning that the Preset Packs have been fixed in 3.3.1, but as far as I can tell they haven't. The first Texture pack, for example, will “Install” in the sense that Aperture doesn't throw an error on install and it increases the .plist file size accordingly, but the textures aren't applied to a photo when you choose an effect. Toggling or otherwise messing with the Curves bricks where I think the textures “live” doesn't do anything either. Just a heads up.

Also, it looks like Pack 5 still can't be installed with some of the others.

(edit: I tested this on a clean Aperture presets .plist file)