Now, all the applications on my Mac air show the same icon and doesn't open, please help!

I did a quick cleaning on my Mac and now all my applications show the same icon and does not open! TIA :-)

"quick clean up"...

It seems that you may have removed some system files, you shouldn't have.

If your Mac is running v10.7 Lion or later, you can restore OS X using OS X Recovery.

Tags: Mac OS & System Software

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