Apache::Scoreboard problem

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I'm trying to get some per-request stats for the entire request, not just the 
response phase, and Apache::Scoreboard looked like it would do the job. 
However, I'm having a few problems with it.

I have the following installed as a CleanupHandler (by which time everything 
should be done), it's just test code to try out Apache::Scoreboard so I'm not 
doing anything fancy with the data. As much as possible it's pulled straight 
from the docs.

sub handler
{
    my $r  = shift;
    my $sp = $r->pool->new;
    my $image = Apache::Scoreboard->image($sp);

     for (my $parent_score = $image->parent_score;
            $parent_score;
            $parent_score = $parent_score->next)
    {
        next unless ($parent_score->pid == $$);    # only want this process

        my $server = $parent_score->server; #Apache::ServerScore object
        next unless $server;

warn "count: ", $server->access_count;
warn "request: ", $server->request;
warn "served: ", $server->bytes_served;
warn "conn_bytes : ", $server->conn_bytes ;
warn "conn_count  : ", $server->conn_count  ;
warn "req_time  : ", $server->req_time  ;
    }
}

However, on use, I get the following:

Can't locate object method "server" via package 
"Apache::ScoreboardParentScore"

According to the docs, that should be  Apache::ParentScore not 
Apache::ScoreboardParentScore. 

I'm currently using: Apache/2.0.52, mod_perl 2.0.0_RC3 and Apache::Scoreboard 
2.05.

Is there something obvious I'm doing wrong?