New Post: Building the sdk on windows 8.1 using VS2013 express

I'm trying to build the sdk but to no avail.
My goal is to build a static version of the library, following the instructions here:
How to statically link the C++ REST SDK, but I haven't even got to the static part, the build fails on the project as is.

Here's what I did:

1. cloned the repo from https://git01.codeplex.com/casablanca
2. ran setup_ps_env_VS2013.ps1 (not sure it's necessary)
3. opened casablanca120.desktop.sln using VS2013 express
4. ran Build Solution
   The compilation seems to work, but linking fails with:

error LNK1104: cannot open file 'MY_WORSPACE\cpprest\Binaries\Win32\Debug\cpprest120d_xp_2_2.lib'   MY_WORSPACE\cpprest\Release\samples\BingRequest\BingRequest120.xp\LINK  BingRequest120.xp

I'm not trying to build it for XP at all, so I then tried the same but with the casablanca120.WinRT.sln solution, when I try to build that I get:

MY_WORSPACE\cpprest2\Release\src\build\casablanca120.winrt.vcxproj : error  : Unable to read the project file "casablanca120.winrt.vcxproj".
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets(1809,3): The imported project "C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v12.0\Microsoft.Windows.UI.Xaml.Cpp.targets" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.

MY_WORSPACE\cpprest2\Release\src\build\casablanca120.wp81.vcxproj : error  : Unable to read the project file "casablanca120.wp81.vcxproj".
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets(1809,3): The imported project "C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v12.0\Microsoft.Windows.UI.Xaml.Cpp.targets" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.

MY_WORSPACE\cpprest2\Release\samples\BlackJack\BlackJack_UIClient\BlackJack_UIClient120.vcxproj : error  : Unable to read the project file "BlackJack_UIClient120.vcxproj".
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets(1809,3): The imported project "C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v12.0\Microsoft.Windows.UI.Xaml.Cpp.targets" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.

MY_WORSPACE\cpprest2\Release\samples\FacebookDemo\FacebookDemo120.vcxproj : error  : Unable to read the project file "FacebookDemo120.vcxproj".
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets(1809,3): The imported project "C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v12.0\Microsoft.Windows.UI.Xaml.Cpp.targets" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.

MY_WORSPACE\cpprest2\Release\samples\WindowsLiveAuth\WindowsLiveAuth120.vcxproj : error  : Unable to read the project file "WindowsLiveAuth120.vcxproj".
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppCommon.targets(1809,3): The imported project "C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v12.0\Microsoft.Windows.UI.Xaml.Cpp.targets" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.

Any ideas what I'm doing wrong?