i have only v3.0 and v3.5 folders in
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\
i tried to install framework 4.7 but it didnt solve the problem
EDIT: i installed multi targeting pack for .NET 4.6 and now i have:
Path: C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.0\
Facades\System.Runtime.dll
but no FACADE folder in 3.0 and 3.5 and no System.runtime.dll either
EDIT2: installés framework 4.5 dev tool
now i have façades folder for 4.5 too but no système.runtime.dll inside
so i copy paste your 4.5 système.runtime.dll inside
the error still hère ?