Cannot load Microsof.Lync.Model.dll "This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded”

Question

I saw this particular error already at stackoverflow but only for C# development issues. In my case I try to do some Powershell-scripting with Lync like mentioned here: Change status of Lync by script. But I cannot load the module as mentioned (I tried both Import-module and Reflection):

import-module -Name "C:\Program Files (x86)\Microsoft Office\Office15\LyncSDK\Assemblies\Desktop\Microsoft.Lync.Model.Dll"

[Reflection.Assembly]::LoadFile('C:\Program Files (x86)\Microsoft Office\Office15\LyncSDK\Assemblies\Desktop\Microsoft.Lync.Model.Dll') | out-null

In both cases I get the error "This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded". The DLL's are all there. I have installed the newest Lync 2013 SDK (we have Office 2013 installed), so the version should match. Any idea how I can load those assemblies/DLL's? Thanks in advance for any hint.

What version of PowerShell are you using? Type $psversiontable to check -- you'll also see the CLRVersion returned there. I bet you're running PowerShell 2.0, which runs on the 2.0 .NET runtime; upgrade to PowerShell version 4 and you should be able to load the Lync dlls. — jbsmith, Jan 12 '15 at 15:27
What version of Windows are you developing/importing on? Windows 7? — Mathias R. Jessen, Jan 12 '15 at 17:21
It's Windows 7, yes (will soon be 8 unfortunately due to corporate changes) — Christof Kälin, Jan 16 '15 at 09:32

Cannot load Microsof.Lync.Model.dll "This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded”

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