New Post: Where is DelegateCommand in 4.2??

I did try this, but I keep getting the following build error when referencing DelegateCommand:

Error 15 The type 'Microsoft.Practices.Prism.IActiveAware' is defined in an assembly that is not referenced. You must add a reference to assembly 'Microsoft.Practices.Prism.SharedInterfaces, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. C:\Projects\Columbus\Common\Infrastructure\PagedListCommands.cs 128 67 Common

I'm not even using IActiveAware in the class, and SharedInterfaces is there anyway, all I have done is added the dll to the package as you suggested.