Not sure what the problem is here, I can open the attachment fine, if you have a look it is saved as a .sqlplan file. It may be the version of management studio I'm on, I'm running 2008 R2. I have put all the files into a rar file and uploaded them, if this doesn't work the only thing I can think of is to take a screen shot, let me know how you go

To answer your first question I ran it several times and got the same result.