The type 'DeviceDescriptor' is defined in an assembly that is not referenced

[beaka]

Using monodevelop and have this error message:
/Examples/SinusoidRegressionLSTM/SinusoidRegressionLSTM/Program.cs(29,29): Error: The type 'DeviceDescriptor' is defined in an assembly that is not referenced. You must add a reference to assembly 'Cntk.Core.Managed-2.7, Version=2.7.0.0, Culture=neutral, PublicKeyToken=a82c1f3f67b62253'. (SinusoidRegressionLSTM) Compiler

I used nuget to add the Cntk.Core.Managed package but still get the error, tried "Clean all"

Any ideas as to what is not right?