ติดปัญหา mysql ไป excel Fatal error: Uncaught exception 'com_exception' with message

<?php
include "connect.php";
//$strFileName = "/point/point.xls";
$sql="select * from point_lab order by id_num ";
$result=mysql_db_query($dbname,$sql);

if($result){
$strPath = realpath(basename(getenv($_SERVER["SCRIPT_NAME"]))); // C:/AppServ/www/myphp

				// Excel Document Root //
				$strFileName = "/point/point.xls";
				// Connect to Excel.Application //
					$xlApp = new COM("Excel.Application");
			$xlBook = $xlApp->Workbooks->Add();


				// Create Sheet 1 //
				$xlBook->Worksheets(1)->Name = "My Customer";							
				$xlBook->Worksheets(1)->Select;

				// Header //
				$xlApp->ActiveSheet->Cells(1,1)->Value = "CustomerID";
				$xlApp->ActiveSheet->Cells(1,2)->Value = "UserID";
				$xlApp->ActiveSheet->Cells(1,3)->Value = "Name";
				$xlApp->ActiveSheet->Cells(1,4)->Value = "group";
				$xlApp->ActiveSheet->Cells(1,5)->Value = "week1";
				$xlApp->ActiveSheet->Cells(1,6)->Value = "week2";
				////
			
				$intRows = 2;
				while($row = mysql_fetch_array($result))
				{				
					// Detail //
					$xlApp->ActiveSheet->Cells($intRows,1)->Value = $row["id_num"];
					$xlApp->ActiveSheet->Cells($intRows,2)->Value = $row["id_st"];
					$xlApp->ActiveSheet->Cells($intRows,3)->Value = $row["tea_name"];
					$xlApp->ActiveSheet->Cells($intRows,4)->Value = $row["group"];
					$xlApp->ActiveSheet->Cells($intRows,5)->Value = $row["week1"];
					$xlApp->ActiveSheet->Cells($intRows,6)->Value = $row["week2"];
					$intRows++;
				}

				@unlink($strFileName); // Delete old files //	

				$xlBook->SaveAs($strPath."/".$strFileName); //*** Save to Path //
				$xlBook->SaveAs(realpath($strFileName)); //*** Save to Path //

				// Close & Quit //
				$xlApp->Application->Quit();
				$xlApp = null;
				$xlBook = null;
				$xlSheet1 = null;


		}

		mysql_close();	
?>