Upgrading- 404 error

I just upgraded, and I’m getting a 404 error where my entries are supposed to be:
http://glosses.net
Archives are not displaying either. My entries are all there, though – when I click “view” from the interface, I see the entries (i.e individual archives display).
http://glosses.net/archives/2004/12/23/hearst-museum-antics/
Help???