Problem in Using Spreadsheet_Excel_Writer package

Hi, I am working on PHP and backend as MySQL. I am using Spreadsheet_Excel_Writer package. It works fine on LINUX and some machines of Windows. I have not installed any package manager. I have just copied the libraries to the folder. But the same procedure i have tried on Main window server it is not working and give the garbage data as that particular PHP executes and the same PHp when executed on Local server ask to save the excel file. Local Server having PHP 4.3.1 and Main Server have PHP 4.3.2. I am not able to get the solution. Please help me out. Thanks, Gaurav.