die OpenTDDLib.php war umbenannt zu *.old 
nachdem ich wieder php benannt habe, habe ich die fehler auch gesehen:
      switch( $_info->info_version )
      {
         case 4:
            /* many thanks to Rubidium for helping me getting OpenTTDLib's newgrf support working */
653:                          $_info->grf_count = $this->_packet->Recv_uint8();
            $_info->grf = array();
                        
            for( $i = 0; $i < $_info->grf_count; $i++ )
            {               
               $_grf_id = dechex( $this->_packet->Recv_uint32( true ) );
               
               for( $j = 0; $j < 16; $j++ )
               {
673:                                     $_md5[$j] = sprintf( "%02x", $this->_packet->Recv_uint8() );
               }
               
               $_grf_md5 = implode( '', $_md5 );
               
               $_info->grf[$i]->id   = strtoupper( $_grf_id );
               $_info->grf[$i]->md5sum   = strtoupper( $_grf_md5 );
            }   
hmm? Nen update hast du nicht gemacht, oder?