I needed to reinstall Mac OS X, so my plan was to format the drive, install OS X Lion (since I have the USB stick here) and then update to Mavericks.
Sounds simple, yet I have a problem: The Mavericks download does not start! I logged into the App Store and clicked on Load, and it says that the download is in progress.
But: Nothing happens. I do not get a progress bar in the Purchased Menu and the Icon in Launchpad only says it is Loading but the progress bar there does not change.
I tried another already purchased app and it did not work either!
I deleted everything in the App Store download folder – no success
Best Answer
Try resetting the Mac App Store.
Enable the debug menu and restart the Mac App Store.
Choose the Reset Application option.