upgrading from inn 2.2.1 -> 2.4.1

[Jason]

> Have you enabled and rebuilt overview?  I don't think the overview
> written by 2.2 is usable by 2.4.
> 
> Make sure overview is enabled in inn.conf and run "makehistory -FOx"
> to recreate overview from your spool.
I did this and ran makehistory -FOx
and now SOME newsgroups are populated, but not all of them.

I see in the news.err, the following
[root at kendo]# tail news.err
Jul 16 06:53:22 kendo makehistory[22376]: [ID 124423 news.error] tradspool: can't determine class: 
@050000000027000000020000000000000000@: Bad article handle

regards,
Jason