I had to reinstall Mountain Lion OS on my Mac Mini. I used an external hard disk as the boot disk.
I use this machine as a server, so I tried to install the Server App from the Store.
When I open my Purchases, it says Server App is "Already Installed".
It is not true! There is no Server App installed.
How can I force download and install the Server App?
thank you Stefano
Also XCode says "Already Installed" but it is not, by the way.
Disconnect any external drives connected to the Mac on which you wish to install and try again.
Retrieving data ...