Building the sources for 64 bit configuration gives error

hi all,
I am trying to build my qt sources for 64 bit configuration, but Qt visual studio addin gives me some error like " Qt version is not supported for this platform"
I can build the sources for 32 bit, but i can not build it for 64 bit.

Anybody knows how to build the sources for 64 bit configuration.

Thanks in advance.

Exact error displayed by the visual studio is "The following error is occured: Can't find a Qt version for the current build platform"

This is the message box displayed when we start build. It looks like the message box is displayed by Qt visual studion addin.