That didn’t work, but after playing around with it a bit I think I found the problem. I have my site set up so the index.php and .htaccess files are in the root directory and everything else for WP is in a subdirectory (see this article on codex.wordpress.org). I tried moving wp-calendar.php to the root directory, and instead of just giving me a 404 at /calendar like it has been I got an error message saying it couldn’t find the header. Then I changed line 12 to point to the correct location of my blog’s header and now it works! Thanks for the replies. This is a great plugin, by the way!
I’m also having problems with this plugin. I followed the installation instructions carefully and it seems to work fine until actually trying to view the calendar. It shows up in the admin panel and lets me add events, but when I go to /calendar I get a 404. Think you could help me out? My site is http://www.utahlug.org. Thanks!
