No copy window

[JoergNeidig]

User: JN

Steps to reproduce: loaded AAS & auxilliary AAS. Edit mode. Click "copy single entity"

Expected results: Copy window opens

Actual Results: Nothing plus error message

Message: Error While in user callback (modify repo lambda): Beim Festlegen der Eigenschaft "System.Windows.ResourceDictionary.DeferrableContent" wurde eine Ausnahme ausgelöst. Die Datei oder Assembly "PresentationFramework.Aero2, PublicKeyToken=31bf3856ad364e35" oder eine Abhängigkeit davon wurde nicht gefunden. Das System kann die angegebene Datei nicht finden. at .

[JoergNeidig]

Same behavior when clicking on "Assign to existing CD". Browser window does not open, same error message is given.

[admin-shell]

For me, this looks like a specific flaw in your .net environment. Never have seen this before ..

[admin-shell]

See: StackExchange.
Is this a problem using Win7.
If so, may be switch the dependencies to Aero(1) for the whole project, are being described?

[admin-shell]

After a chat with Joerg, we came to the conclusion that it's Win7. The current project binds towards Aero2, which is Win10 lib only.
Anyone: please give an indication, if we should try to a Win7 compatible solution. This might add risks.