QT 4.7.2 build error

[Kewal]

I am trying to build and I am using QT 4.7.2, for some reason QT creator does not allow me to select release mode and this is the error I am getting, Can anybody throw some light on this?
Though 4.7.2 is selected I am not able to understand from where is the jom.exe of 2010.05 is called.

Running build steps for project Site~Rite7...
Starting: "C:/Qt/2010.05/bin/jom.exe" clean
c:\qt\4.7.2\bin\qmake.exe -spec ........\Qt\4.7.2\mkspecs\win32-msvc2008 -o Makefile Site~Rite7.pro

Project LOAD(): Feature qt_config cannot be found.

jom 0.9.4 - empower your cores

command failed with exit code 3

The process "C:/Qt/2010.05/bin/jom.exe" exited with code %2.