Visual Studio extension could not find a required assembly
问题 I wrote an extension for Visual Studio 2013. Because of bloody ComboBox bug, I had to include System.Windows.Interactivity to my project. To add more details: <Project> uses additional solution assembly, say <Project>.Editor, which contains the physical editor. <Project>.Editor references System.Windows.Interactivity <Project> references System.Windows.Interactivity as well. In fact, I'm using nuget to load Expression.Blend.Sdk package (it's compatible with WPF 4.5) Effect: When part of