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QUESTION
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My “Open With” menu in OS X has many duplicate applications listed.
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ANSWER
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Open Terminal and run the following command:
/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain user;killall Finder;echo “Open With has been rebuilt, Finder will relaunch”
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EXAMPLES
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APPLIES TO / KEY WORDS
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OS X
Open With
OpenWith
Sub Menu
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REF
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http://osxdaily.com/2013/01/22/fix-open-with-menu-mac-os-x/