https://www.dotnetzone.gr:443/cs/blogs/birbilis/archive/2012/06/11/howto-load-a-xaml-resourcedictionary-from-a-net-assembly.aspxCopying here my answer at: http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/11a42336-8d87-4656-91a3-275413d3cc19 What seems to work for me is the following (copying from the source code of http://ClipFlair.codeplex.com [currently under development])elCommunityServer 2.1 SP3 (Build: 20423.1)