I've fixed the missing slash, but it's still not parsing.
I entered my rss into that validator and I get "Error: Object # has no method 'load'" but then, when I load the RSS feed that the Roku example uses ( rokudev.roku.com/rokudev/examples/videoplayer/xml/globalissues.xml ) it also gets the same error from the validator.
I should note that the roku xml does work in my app.
Update: I moved the xml files from staging to the normal server, thinking it could be a permissions issue. Even then, it still won't parse. I also made a copy of the working Roku example rss and stored it locally, and it won't work either. Does the demo app have some sort of server configuration piece that's stopping it from loading any RSS feeds that I'm hosting?