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[Humex]

Hi,
How to remove duplicates apps on Mac OS X 10.8.2 and 10.8.3 :
http://d.pr/i/HJfa
http://d.pr/i/tcNY

 

[GGJstudios]

You need to rebuild the Launch Services Database by entering the following command in Terminal, followed by pressing enter.

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain system -domain user

After you do that, relaunch Finder by holding the Option/Alt key down while you right-click the Finder icon on the Dock, then select Relaunch.

 

[robbieduncan]

Have you tried rebuilding your launch services database?

 

[Humex]

Thanks to GGJstudios & robbieduncan you for your help. Now duplicates are not.