Reproducible on new empty project using 4.6.0f1 - 5.0.0f1 versions;

Press "Build and run" button when building WSA project with "Unity C# projects" option marked. Error appears in the console.

Error message in the console:

Exception: Failed to build Visual Studio project. Output:
UnityInstallationDir 'C:\Program Files (x86)\Unity4.6.2p1\Editor'
UnityProjectDir 'E:\_Test projects\webcam picker'
Copying assemblies...
E:\BUILDER\webcam 462p1\webcam picker\Unprocessed\UnityEngine.dll
E:\BUILDER\webcam 462p1\webcam picker\Unprocessed\UnityEngine.pdb
E:\BUILDER\webcam 462p1\webcam picker\Unprocessed\UnityEngine.UI.dll
E:\BUILDER\webcam 462p1\webcam picker\Unprocessed\UnityEngine.UI.pdb
E:\BUILDER\webcam 462p1\webcam picker\Unprocessed\WinRTLegacy.dll
5 file(s) copied.
1 file(s) copied.
1 file(s) copied.
1 file(s) copied.
1 file(s) copied.
Running AssemblyConverter...
AssemblyConverter done.
E:\_Test projects\webcam picker\Assembly-CSharp-metro-vs2013.csproj(3,3): error MSB4019: The imported project "E:\_Test projects\webcam picker\UnityCommon.props" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.
E:\_Test projects\webcam picker\Assembly-CSharp-firstpass-metro-vs2013.csproj(3,3): error MSB4019: The imported project "E:\_Test projects\webcam picker\UnityCommon.props" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.

Repro steps:
1. open new empty project in Unity;
2. in build settings switch to WSA platform and mark "Unity C# projects" option;
3. press "Build and run button";

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Duplicate of:
http://issuetracker.unity3d.com/issues/wsa-build-and-run-error-in-the-editor