title: Excel Visual Studio Design Time Adapter Add-in Error
body: <p>I am trying to open excel workbook 2003 using VSTO.
  but i am getting error again again like</p>
  
  <p>" Project cannot be created because the application add-in is not working correctly and might have been disabled.  To check for disabled items in the Microsoft Office application, open the Help menu, click About Microsoft Office Word or About Microsoft Office Excel, and then click Disabled Items.  If either "Word Visual Studio Design Time Adapter Add-in" or "Excel Visual Studio Design Time Adapter Add-in" appears, select it and click Enable.  If not, reinstall or repair your installation of Visual Studio Tools for Office."</p>
  
  <p>Can somebody help ??</p>