I have exactly same problem. I am using SimpleCatch theme and any of the display settings won’t work. Here is what I am seeing when opening calendar:
– Default events template: The whole page just stucks and after timeout only header will be displayed without any content
– Default page template: Only the sidebar is shown, no content whatsoever
– Blog: The frontpage of the site is shown
The problem started when I updated the Event Calendar plugin to 3.0.x. Before that it worked like a charm.
