[mod_python] [SOLVED] [Vampire] ".vampire" not loaded but I do not see why

On Wed, Nov 09, 2005 at 09:54:37AM +0100,
 Stephane Bortzmeyer <bortzmeyer at nic.fr> wrote 
 a message of 17 lines which said:

> [Wed Nov 09 09:52:19 2005] [error] [client 192.134.7.249] handler_root [1] = None

OK, reading Vampire source code, I found the problem. There was a
small difference between my Apache configuration files.

On the machines which work:

<VirtualHost *:80>
    <Directory /var/www/demo>
      PythonHandler vampire
    
On the machine which does not:

<VirtualHost *:80>
      PythonHandler vampire

Putting PythonHandler directly in the virtual host is legal in
mod_python
(http://www.modpython.org/live/current/doc-html/dir-handlers-ph.html)
so it does not raise errors (and it works fine with "normal"
mod_python scripts). But it prevents Vampire to find the handler root.

http://www.dscpl.com.au/projects/vampire/articles/vampire-002.html
gives an example with <Directory> but does not say that it is
*mandatory* for Vampire.