Microsoft Office Excel无法打开或保存更多文档

当我在Windows XP，32位机器上工作时，

我使用Microsoft.Office.Interop.Excel导出到excel工作。

当我工作时没有在Windows 7,64位机器上，我收到以下错误：

when I was working on windows XP ,32bit machine ,
my export to excel using Microsoft.Office.Interop.Excel was working.
No when I am working on windows 7 ,64 bit machine,I am getting the following Error:

System.Runtime.InteropServices.COMException (0x800A03EC): Microsoft Office Excel cannot open or save any more documents because there is not enough available memory or disk space. 
• To make more memory available, close workbooks or programs you no longer need. 

• To free disk space, delete files you no longer need from the disk you are saving to.

（执行以下语句时出现此错误：

(This error comes when executing the following statement:

Workbook excelWorkbook = excelApp.Workbooks.Add(Type.Missing);

 )

请帮我解决这个问题。

Please help me to fix this issue.