I added The events calendar to a second install of wordpress in a subdirectory to start redesigning my site. I have it also installed on the original wordpress install and it works fine.
However, on the second install I can publish an event and when I go to view the event, I get page not found. When you view the full month calendar, the events do show up in calendar view but when you try to click on an event from the calendar, you get page not found (You can hover over the event in the calendar and it shows the details) I have a sidebar widget on the home page and the event link (title and duration) show in the widget, but you also get a page not found when you select an event from widget.
When you look at the url in the page not found for whatever event you've selected, it is pointing to the correct url. I can publish an event and copy the permalink into the browser and it shows page not found. I can publish it and click "preview changes" and get page not found
I exported events from the original calendar and imported them into this install. I thought that may be the problem, however I tried creating new events and get the same problem.
Here are some of the urls to check what I am getting