It seems like the standard security settings for Visual Studio 2013 is too restrictive for the EyeX.Client.Net20 dll, probably because the default settings in VS2013 are adapted for the Windows 8 sandbox.
I did like this to make it work in VS2013 (haven’t tried with Blend, but it should be equivalent)
- Right-click on the Solution in the Solution explorer
- Choose “Properties”
- Navigate to Common Properties –> Code Analysis Settings
- Change the “Rule set” to “Microsoft Managed Minimum Rules”
You can also use the <loadFromRemoteSources> element in app.config. Please refer to MSDN.