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Can't open anything I download!

Just yesterday, after absolutely no problems, I downloaded a file and it said i couldn't open it because I didn't have permission. It said to click the "get info" button and change permissions. My user already had full permission. I dismissed it and deleted the file; it was downloaded from the internet, after all. However, now any time I try to open any file I've previously or recently downloaded to the internet, I can't. I can't even open any screenshots I've took.Please help, this computer is not even one month old, I can't afford to have any problems!!

MacBook Pro, Mac OS X (10.7.4)

Posted on Sep 3, 2012 8:59 AM

Reply
10 replies

Sep 3, 2012 1:16 PM in response to LunaUsagi

Back up all data. Quit Preview if it's running.


Hold down the option key and select Go Library from the Finder menu bar. From the Library folder, delete the following item(s), if they exist:


Caches/com.apple.Preview

Containers/com.apple.Preview

Preferences/com.apple.Preview.LSSharedFileList.plist

Preferences/com.apple.Preview.SandboxedPersistentURLs.LSSharedFileList.plist

Saved Application State/com.apple.Preview.savedState


Launch the application and test.

Can't open anything I download!

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