What happens if you comment out these two lines?

        $sth = $self->param('DBH')->prepare(
"UPDATE jbg_managed_props SET NumPhotos = 1 WHERE jbgPropertyID = ? "
          );
        $sth->execute($id) if ( !$self->query->param('pId') );
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Does the segfault go away?

It looks like your passing your DBI handle as a CGI parameter and then expecting it to work as one once it has been sent to the client and returned?

I'm not a CGI person, but I wouldn't expect that to work.

My apologies if $self is not a CGI object.