Migration Assistant leaves 'Open With' options for programs not installed on new Mac

Users who transfer their old data with Mac OS X 10.5.x Migration Assistant may experience an issue when attempting to use the 'Open With' function in Finder where programs from their previous machine show up, despite not being installed on the new system.

Edited by Joe Aimonetti

Users who transfer their old data with Mac OS X 10.5.x Migration Assistant may experience an issue when attempting to use the 'Open With' function in Finder where programs from their previous machine show up, despite not being installed on the new system.

This issue can arise when users transfer their accounts from their previous Mac to their new Mac using Migration Assistant. In this Apple Support Discussions thread, user "bbhh" describes his issue:
"I just set up my brand new 24" imac. I used migration assistant from my 15.4" macbook pro, which had bootcamp installed on it.

Now on my imac when i right click on a file and go to 'open with' I'm still given the options from the Boot Camp Partition off my other computer. I do not have bootcamp installed on this computer."

Possible workaround
ASD contributor "QuickTimeKirk" replied with this solution:
1. Quit all running applications.
2. Trash the following two files in the Macintosh HD > Library > Caches folder:

com.apple.LaunchServices-0230.csstore
com.apple.LaunchServices-023nnn.csstore
where nnn is the User ID number of the affected account.

Type your Admin password if prompted to authenticate the deletion of these files.
Note: If you upgraded from Mac OS X 10.4 Tiger, this folder may also contain files with file names:

com.apple.LaunchServices-0140.csstore com.apple.LaunchServices-014nnn.csstore where nnn represents the User ID numbers of accounts on the Mac. These files can also be deleted as they are leftovers from Tiger.
3. Restart your Mac.
4. Log in to the affected account.
5. If the problem is resolved, skip to step 6. Otherwise:

    Trash the com.apple.LaunchServices.plist file in the Home > Library > Preferences folder.
Repeat steps 1-4.
6. Empty the Trash.

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