Digital imaging professionals who rushed to upgrade to the new OS have been distressed when they attempt to open their essential photogs tool, as Apple’s big cat is not prepared to support versions of Aperture earlier than 2.1.4. An Apple tech support document published in the early hours of this morning confirms the news, warning: “When you attempt to open Aperture 1.5.6 on a computer running Mac OS X v10.6 Snow Leopard, the following alert appears: “You can’t use this version of the Application Aperture with this version of Mac OS X."” Apple then helpfully informs users that the problem “is expected as Aperture 2.1.4 is required for Snow Leopard compatibility.” Apple has made the Aperture 2.1.4 update available for download by users upgrading to Snow Leopard. The software was introduced near the ship date for Snow Leopard, August 27. To be fair, Apple released Aperture 2.0 almost 18 months ago. An upgrade from a previous version to the current, supported version, costs c.$100.