on adminapplications_addonipsdownloadssourcesclassesmoderate.php and it's ok...
Canal Rss
Canal Atom            $this->DB->delete( 'downloads_downloads', 'dfid ='.$row['file_id'] );
below
            //-----------------------------------------
            // Delete old versions
            //-----------------------------------------  ÂÂÂÂ
           ÂÂÂÂ
            $this->DB->build( array( 'select' => '*', 'from' => 'downloads_filebackup', 'where' => "b_fileid=" . $row['file_id'] ) );
            $inner = $this->DB->execute();
           ÂÂÂÂ
            if( $this->DB->getTotalRows($inner) )
            {
                while( $r = $this->DB->fetch($inner) )
                {
                    $versions->remove( $file, $r ['b_id'], $r, $file );
                }
            }