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File type associations

If associations "stick" to a particular app and will not change by the usual expedient of "Get Info", changing default app and "Apply to all" then try this:

  1. Repair permissions
  2. Open Terminal and type in the following:
/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"
All file associations are managed through the file and can be managed from the command line via the lsregister utility. The "-dump" option will show you the current database. Use the "-kill" option to rebuild the database.