That problem happened only because somone made the url for the page have an extra segment like /sharedfiles1/main.aspx instead of just a normal 1 segment url like /somepage.aspx
I deleted those pages and then published one of the shared files instance here: http://demo.mojoportal.com/files.aspx and it works as expected.
People do a lot of strange things on the demo site. Its possible to make broken pages by putting in bad urls. With great power comes responsibility and unfortunatley when we let complete strangers login to the demo site as admin some small percent of them will be jerks.
Over the last few days I've been battling with someone who keeps trashing the demo site apparently in an effort to give a bad impression of mojoportal. I've blocked several ip addresses so far but I doubt if I've seen the last of him. He was doing things like adding a 100 or more content instances to the home page to make it really slow, he pastes in raw html with extra html and body tags to mess up the demo site. I mean the demo site does get junked up from normal use and I periodically have to reset it to clean it up anyway but lately someone has been messing it up on purpose.
Thanks for pointing out the broken pages.
Best,
Joe