Strange Linker Error with VC++ Build

Hi Folks,
i have a strange error while building my library in VC++.
when i try clear build of my library,it throws the following error

The system cannot find the path specified.
Error executing c:\windows\system32\cmd.exe.

But when i again try to select the same project and build it(without clean build)
it builds without any error.

Can someone help me what is the reason for this.

Thanks & Regards
Sanju

Your problem sounds like a post-build problem, the project is built but something after the project has been built is not running. In your Project Settings->Post Build Step is there any call to cmd.exe or a call to a batch file or something?