How to debug Excel Addin project?

Hi,

I have my application that basically designed in the VS 2008 that has VB project include 

along with the C# project. But i am using VS 2010 to run this application. And my application 

acts as an addin to the Office Excel. When i debug it, it throws a message syaing

"Debugging information for  EXCEL.EXE cannot be found or does not match. binary was not built with debug information visual studio 2010"

and also sometimes "Debugging information for EXCEL.EXE cannot be found or does not match. Exports loaded". I am also pointing to 

debug folder in the source folder. But still not able to debug, i can see only the Excel sheet opening but not the addin visibility.

And when i build the setup, the size from 7k reduces to 5k and the built  application will not install.

Can some one help me in this??

thanks in advance..

Roopini