Qt5 does not recognize VS2012 Express

I just installed Visual Studio 2012 Express on a Windows 7 Prof. 32 PC. Before this I removed the old 2010 Express installation.

I set the makespec correctly and then tried to generate vcxproj files.

I got the following error for each project:
WARNING: Generator: MSVC.NET: Found more than one version of Visual Studio, but none in your path! Fallback to lowest version (MSVC.NET 2012 (11.0), MSVC.NET 2010 (10.0))

Then I added "C:\Program Files\Microsoft Visual Studio 11.0\VC\bin" to the path Now I get the following error:
WARNING: Generator: MSVC.NET: Found more than one version of Visual Studio in your path! Fallback to lowest version (MSVC.NET 2012 (11.0), MSVC.NET 2010 (10.0), MSVC.NET 2012 (11.0) in path, MSVC.NET 2012 Express Edition (11.0) in path)

The first error is incorrect because I removed the 2010 installation.

The second error is incorrect because I removed the 2010 installation and because it seems to detect the 2012 installation three times.

This is an immediate showstopper.

How can we work around this?