Can't link to index.html

(Domains and project names are redacted.)

I am publishing a Doxygen HTML tree using OS X Server (Mountain Lion). I have "Websites" on, and in "Server Website," I have aliased "/MyProject" to "/Users/fritza/Department/Project/docs/html". "index.html" is the first in the list (I have not touched it) of index file names.

There is an index.html file in that directory. Accessing http://my.example.com/MyProject gives me the Doxygen main page, and I can navigate from there. Good.

But there is a "Main Page" link on each page, which is coded as:

<a href="index.html"><span>Main&#160;Page</span></a>

An HREF to "index.html" should be no problem, right? (The website's tree is flat, by the way.)

Instead, when I click the link, I get a 404 page, and the complaint that /MyProject/index.html/ (note the trailing slash) is not found. This happens even if you click the link as it appears in index.html itself.

Linking to index.html, the file, seems like an elementary thing to do. Other people must be getting the correct behavior. What have I done wrong?