Comment 9 for bug 1229337

OK, I see the same thing. Putting a "return" immediately after this section doesn't make the problem go away:

    def on_rename_activate(self, *UNUSED):
        tuple = self.dests_iconview.get_cursor ()
        if tuple == None:
            return

        return # <-- here

...but putting it immediately before the self.dests_iconview.get_cursor() call *does* make the problem go away. Why would a get_cursor() call cause a problem?