Attempted to update iPhoto through the App store. Apparently our wireless connection went down and the download did not complete. Now the App store Update page shows "an error has occurred" for iPhoto. When I click on "update" it tells me "iPhoto failed to download use the purchases page to download again". When I go to the "Purchases" page the Update button shows "an error has occurred" and if I click on the Update button I get a alert box stating, "iPhoto failed to download use the purchases page to download again". I did download the iPhoto update directly from the Apple website, but it will not allow me to use the update I downloaded from the website to update iPhoto. How can I update iPhoto?