Using RSS feed aggregrator app.
Creates intial page fine and you can add additional rss feeds which do show up on the left hand menu.
When you click/select one of the other feeds listed you get this message:

Page Not Found: (forward slash) / RssFeedAggregator?

It seems to add a forward slash / as an additional character to the app name.

What should (probably) read:

RSSFeedAggregator?

NOT

(forward Slash) / RSSFeedAggregator?

Thank you