Profile: Mediacross

I'm creating a Category Product Collections using the Nop Smart Product Collections plugin. It works, but every time I restart the application pool, it disappear from the home page. I can still see it on the administration page, but when I click edit nothing show up.
I have repeated the process of creating it many times, but with the same results. It works until the application is running, but when I had to restarts it disappears.