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Solution: Wrong application opening from Icon
Hello!
Several user have had problems with opening applications. Double-clicking application icon wrong application opens. Deleting LSApplications, LSClaimedTypes and LSScheme files were often blamed, but no help.
Real reason is corrupted "~/Library/Preferences/com.apple.LaunchServices.plist" preference file. Delete that file and relauch Finder, and all files will be opened with original default application.
Technically only small part of "com.apple.LauchServices.plist" is corrupted. XML dictionary key "LSBindingPrefsTypeBindings" contains list of file types and corresponding applications.
Somehow there is an entry "A;????.app" containing link to some application like "com.apple.TextEdit" on my tests. Only that entry is necessary to remove.
It was not easy to reproduce that error. I tried to define new application for "testapplication.app", but for applications "Finder:File>Show Info" doesn't contain "Open with Application" menu command.
I had to create text file (mytextfile.txt) and change it's name to "mytextfile.app". Then "Finder:File>Show Info" allowed me to define new opening application. I chose TextEdit and clicked "Change all" button, and situation was ready. No application could open. Anything I double-clicked and always TextEdit opened.
Solution is explained above. Enjoy your Mac OS X user experience again.
--Ari
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