Midcom-2.2 to 2.4 upgrade

Hello folks,

I recently tried to upgrade my midcom v2.2.0 site to v2.4.0. I figured I'd be 
smart and replace the midcom directories under /usr/share/php/PEAR and see 
what would happen. When I pointed my web browser to the site, I was greeted 
with this message:

"Tried to load the topic for NAP cache backend creation, which failed: Object 
does not exist"

I know there have been some major updates to the Midcom codebase and I 
*mostly* expected the site not to come up. I tried updating the db part of 
the Midcom template via repligard but it didn't seem to do the trick: the 
template was still the same when I logged into Aegir and looked around.

What am I doing wrong, and how should I upgrade my site to midcom-2.4?

Thanks a lot,

Nico
-- 
Marcelo N. Halpern,  your favourite daemon.
UNIX Systems Administrator - Ramapo College
TEL: +1.201.684.6821  FAX: +1.201.684.7961