After the error I had while Xcode 4.5.2 was trying to connect to the iPhone simulator, take a look to this post. Yesterday I had another proble, I was trying to install the Library docset for iOS 6/5.

The message I received from the Xcode was the following:


Installation path, /Users/gg1/Library/Developer/Shared/


has the wrong ownership or is not writable.

To solve this problem I opened the terminal and then I issued the following commands:

# cd /Users/gg1/Library/Developer/Shared/Documentation/

# sudo chmod 777 DocSets

I don't know if this is uthe correct way to solve this problem, anyway it worked fine for me.