Manage Custom Sizes
When I have a non-standard paper size and go into the print dialog to set up a custom paper size, the "Manage Custom Sizes" does not show up as an option at the bottom of the selection list in Aperture. It does show up in any other print dialog, such as Preview, and even in PhotoShop. What this means is that I have to go out of Aperture to set up a custom paper size.
MacBook Pro, Mac OS X (10.6.6)