Aperture 3.4.5 and earlier: Can't place Print Products orders on OS X Mavericks
When you place an order for a book or prints from Aperture 3.4.5 or earlier on a computer running OS X Mavericks v10.9, nothing happens when you press the Place Order button.
To resolve the issue update to Aperture 3.5 or later. Alternatively, you can wait about 30 seconds after clicking Buy Book before you click Place Order; if you do this the order will successfully be placed.
Note: This issue does not occur on earlier versions of OS X.