Comment 2 for bug 585136

Ok I can reproduce this.

If you open a new application (not on the dock), choose 'pin to dock' and then close the app.

Run the app again and you get 2 icons (this is already an open bug!). When you click pin on the new 2nd icon, it crashes.

I might make this a dupe of that other bug, as without that bug you don't get this bug...