I did have one funky problem during the install. I tend to
not close down programs when I install something (yeah, I know, "bad Jeff"). Well this build prompted me to close a few programs, which I dutifully did ("good Jeff") and clicked retry. The setup chugged away a little longer, and then spit back another warning to close a running application before continuing with the setup. The catch? The application
was the WLM setup!
I attached a screenshot just to prove I wasn't hallucinating.
For what it's worth, it wasn't a real problem. Clicking the "ignore" button worked just fine.