Update: Apple has released this knowledge base article addressing this issue. The iTunes 9 iTunes Store will not work with developer's copies of Snow Leopard. In order to access iTMS, users with developer's builds of Snow Leopard must upgrade to retail release versions.
Original Post: The excitement of downloading iTunes 9 yesterday quickly faded as I encountered a strange error. What started as curiosity over the new look of the iTunes Music Store soon became a still unsolved battle with the following error message… Read more