I have a new late '13 15" MBP with Mavericks pre-installed. I want to download a copy of the Mavericks installer so I can create a 10.9 installation USB drive. When I go to the App Store app and click on "download" (either from the local "Purchased" listing in the App Store app or directly on the OSX Mavericks App Store page) I get the message in the thread title -- basically, I'm not allowed to download the 10.9 installer. Any suggestions as to how/where to download the 10.9 installation package? Thanks!