I had same problem of duplicate Apps showing on Finder "Open With" contextual menu.
After following instructions on this link http://support.apple.com/kb/TA24770?viewlocale=en_US&locale=en_US all Mac applications where OK, but could not see VMware Fusion Virtual Machine applications in Finder contextual menu.
So follow these steps:
This should reset contextual menu in Finder with the VMware Fusion 5 applications.
Mac OS X 10.8.3
VMware Fusion 5.0.3
Great, post tip, thanks!
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