Shoutbox, problems with username? Code inside...

I have recently upgraded to 0.750 Gold, now my shoutbox won't work... It says:
Fatal error: Call to a member function on a non-object in /hsphere/local/home/drekkame/drekkamer.com/modules/Shoutbox/index.php on line 72

The code is:

Code

// get the username
                        $uid = $shoutline[0];
                        if ($uid == "1") {
                            // user is anonymous
                            $username = pnConfigGetVar('anonymous');
                        } else {
                            // get current username
                            $column = &$pntable['users_column'];
                            $result=$dbconn->Execute("select $column[uname] FROM $pntable[users] WHERE $column[uid]='".pnVarPrepForStore($uid)."'");                            list($username) = $result->fields;
                        }


Line 72: $result=$dbconn->Execute("select $column[uname] FROM $pntable[users] WHERE $column[uid]='".pnVarPrepForStore($uid)."'");
please update modules/Shoutbox/index.php with *this version*

--
regards from germany
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