如何在Qt创建者中配置CDB ?

The question here is the same as mine but the solution there is not working for me. I am using QtCreator 2.4.1 on Windows 7. When i try to debug a simple hello world app the message displayed is: "The preferred debugger engine for debugging binaries of type 'x86-windows-msvc2010-pe-32bit' is not available....Details: There is no CDB binary available for binaries in format 'x86-windows-msvc2010-pe-32bit" is the same as mine but the s