Error when trying to open Qt5 project in Visual Studio 2012

[bergerbits]

I am trying to create a msvc2012 project from a Qt project file (.pro) using Qt 5 Add-In.
ie QT5->Open Qt project file (.pro)
I get this error:
[1] - Could not find qmake configuration file win32-msvc2012.

This worked for me once before but I forgot details. Here is full error message (directories crossed out).

--- (Import): Generating new project of qtdocking.pro file
--- (qmake) : Using: c:\xxx\3rdparty\qt-5.1.1\msvc2012_64_opengl\bin\qmake
--- (qmake) : Working Directory: C:\Users\suzanne\Documents\xxx\projects\qtdocking\Source
--- (qmake) : Arguments: -tp vc "qtdocking.pro" -o "qtdocking.vcxproj" QMAKE_INCDIR_QT=$(QTDIR)\include QMAKE_LIBDIR=

$(QTDIR)\lib QMAKE_MOC=$(QTDIR)\bin\moc.exe QMAKE_QMAKE=$(QTDIR)\bin\qmake.exe

[1] - Could not find qmake configuration file win32-msvc2012.
[2] - Error processing project file: qtdocking.pro

--- (Import): Error(s): 2
--- (qmake) : Exit Code: 3

Any hints appreciated. Thanks