More tag not working

I submitted this to the Themes forum, but maybe it’s better here (I’ve had no replies). I have several imported posts and some new ones where I inserted the ‘more’ tag, but when I click on it, I get a 404 ‘not found’ page. I’m using the Pilcrow theme (which changes ‘More’ to ‘Continue Reading’ but that’s fine. It just doesn’t work. The site (still under construction) is at http://cwahawaii.org/gf/ and the first post you see on the home page has an example of a non-working ‘continue reading’ tag. I hope someone can tell me how to fix this!