I am not sure if you have the all the file with you?
Don't have file
If you open the zip folder (Version 2.4.0), you shall be able to see xAppClass folder and setup folder.
I found xAppClass folder but not found setup folder.
Please check the content of the zip file, I open source code with VS2008, and both the class and setup folder is available.
I already open source code with VS2005 and VS2008. And please see attached file for all error.