After I added the Caliburn sources to my solution (I added WPF and Silverlight parts) I noticed that the build target path contains many language-specific folders and one of each contains inside itself System.Windows.Interactivity.resources.dll.
How to get rid of these folders?
p.s. I draged out System.Windows.Interactivity.dll from Blend path and draged in to the libs path within the Caliburn sources. But it did not help (((