Error during installation process (qt.511.win64_msvc2012_64.essentials):

I got following error while installing Qt 5.1.1 on my Windows 7 machine.
---------------------------
Installer Error
---------------------------
Error during installation process (qt.511.win64_msvc2012_64.essentials):
The output of
C:\Qt\5.1.1\msvc2012_64\bin\qmake.exe -query
is not parseable. Please file a bugreport with this dialog https://bugreports.qt-project.org.
output: ""
---------------------------
Retry Ignore Cancel
---------------------------

---------------------------
Installer Error
---------------------------
Error during installation process (qt.511.win64_msvc2012_64.addons):
Could not find the needed QmakeOutputInstallerKey(qt.511.win64_msvc2012_64_qmakeoutput) value on the installer object. The ConsumeOutput operation on the valid qmake needs to be called first.
---------------------------
Retry Ignore Cancel
---------------------------

---------------------------
Installer Error
---------------------------
Error during installation process (qt.511.win64_msvc2012_64_opengl.essentials):
The output of
C:\Qt\5.1.1\msvc2012_64_opengl\bin\qmake.exe -query
is not parseable. Please file a bugreport with this dialog https://bugreports.qt-project.org.
output: ""
---------------------------
Retry Ignore Cancel
---------------------------
---------------------------
Installer Error
---------------------------
Error during installation process (qt.511.win64_msvc2012_64_opengl.addons):
Could not find the needed QmakeOutputInstallerKey(qt.511.win64_msvc2012_64_opengl_qmakeoutput) value on the installer object. The ConsumeOutput operation on the valid qmake needs to be called first.
---------------------------
Retry Ignore Cancel
---------------------------