- Re: don't sleep after upgrade 10.9.4 MacBook Air 2 hours ago
- Re: my macbooks starts up then cuts off before it is finish loading what could be causing this problem and how can i fix it 2 hours ago
- Re: Black screen upon startup. 2 hours ago
- Re: How do I upload videos onto iCloud from a laptop 2 hours ago
- Re: How do I stop all the spam? 2 hours ago
Quit the App Store of it's open.
Open the Finder. From the Finder menu bar click Go > Go to Folder
Type or copy/paste: ~/Library/Cookies
Click Go then move the com.apple.appstore.cookies and com.apple.appstore.plist files from the Cookies folder to the Trash.
Type or copy/paste: ~/Library/Preferences
Click Go then move the com.apple.appstore.plist file from the Preferences folder to the Trash.
Try the App Store.