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Sep 28, 2015 at 19:59 comment added PRouleau One more snag: OS/X still adds the old apps to the list after rebooting with the disk where the old apps are located. I tried the lsregister -kill -r -f -domain local -domain system -domain user command but as long as OSX sees the files, it adds them....
Sep 28, 2015 at 19:39 comment added PRouleau Note that when you run the lsregister command, the system must have access to the disks that contain the old, invalid apps (if they are still in these disks).
Sep 28, 2015 at 18:37 comment added PRouleau By closing all apps, rebooting, opening a shell and executing lsregister -kill -r -domain local -domain system -domain user then all invalid associations are gone.
Sep 28, 2015 at 18:31 comment added PRouleau OK, after some digging around, I found a couple of sites describing how to use lsregister to clean up OS/X Default Application database. You first need to identify where that executable is. It was not in my PATH. I found i t in /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/
Sep 28, 2015 at 17:41 comment added PRouleau Thanks, looks like there is a lsregister utility that can be used to clean that up.
Sep 28, 2015 at 15:48 comment added Tetsujin It's all controlled by LaunchServices which is well beyond my ability to explain properly.
Sep 28, 2015 at 15:47 vote accept PRouleau
Sep 28, 2015 at 15:46 comment added PRouleau I used RCDefaultApp and it does work under OS/X 10.10.5 (Yosemite). It did allow me to fix the association, Thanks! It also lists all the invalid Apps that reside on external disks that should have never been identified by OS/X as applications that can be used. Unfortunately RCDefaultApp does not seem to allow cleaning them out.
Sep 28, 2015 at 15:33 comment added PRouleau Do you know where this app gets its info? A plist file somewhere perhaps? On the system that has this problem Finder "Open with" dialog for a given file type lists a lot of applications OS/X found in external disks that contain backup of other computers. I'd like to get rid of them too.
Sep 28, 2015 at 15:02 history answered Tetsujin CC BY-SA 3.0