PHPExcel发生远程主机致命错误

PHPExcel-Excel5在XAMPP上工作，但在远程主机上无法获得此

致命错误：未捕获异常"exception"，消息为"Cannot"打开NACHA.xls进行阅读！文件不存在或不存在可读。"在里面/home/trunway/public_html/concommissions/PHPExcel/Classes/PHPExcel/Shared/OLERead.php：79

    error_reporting(E_ALL);
    ini_set('display_errors', TRUE);
    ini_set('display_startup_errors', TRUE);
    define('EOL',(PHP_SAPI == 'cli') ? PHP_EOL : '<br />');
    date_default_timezone_set('Europe/London');
    echo date('H:i:s') , " Load from Excel5 template" , EOL;
    $objReader = PHPExcel_IOFactory::createReader('Excel5');
    $objPHPExcel = $objReader->load("NACHA.xls");
  <-----i just didnt include the Mysql fetchRow, connectivity ect here.. 

    $baseRow = 3;
    foreach($data as $r => $dataRow) {
       $row = $baseRow + $r;
        $objPHPExcel->getActiveSheet()->insertNewRowBefore($row,1);
        $objPHPExcel->getActiveSheet()->setCellValue('A'.$row, $r+1)
                      ->setCellValue('B'.$row, $dataRow['EMAIL ADDRESS'])
                      ->setCellValue('C'.$row, $dataRow['AMOUNT']);
     }
$objPHPExcel->getActiveSheet()->removeRow($baseRow-1,1);
echo date('H:i:s') , " Write to Excel5 format" , EOL;
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save(str_replace('.php', '.xls', __FILE__));
echo date('H:i:s') , " File written to " , str_replace('.php', '.xls', 
pathinfo(__FILE__, PATHINFO_BASENAME)) , EOL;
 // Echo memory peak usage
 echo date('H:i:s') , " Peak memory usage: " , (memory_get_peak_usage(true) / 1024 /   
 1024) , " MB" , EOL;
 // Echo done
echo date('H:i:s') , " Done writing file" , EOL;
echo 'File has been created in ' , getcwd() , EOL;
echo '<br/>';
echo "<a href=http://mcommission.com/commissions/PHPExcel/Tests/NACHA.xls>" . "<b>CONVERT</b></a>";