XamlObjectWriterException

Cannot create unknown type '{clr-namespace:Server.Business.Logic.Workflows.StateMachines.Activities}EnterState'.

Happens because can’t find assembly

1 List<Assembly> ass = new List<Assembly>();
2            Assembly asm =  AppDomain.CurrentDomain.Load("Server.Business.Logic");
3            foreach (AssemblyName refAsmName in asm.GetReferencedAssemblies())
4            {
5                ass.Add(AppDomain.CurrentDomain.Load(refAsmName));
6            }
7 
8             ass.Add(asm);

does’ not work

1   xx.LocalAssembly = asm;
2 
3             XamlReader reader = ActivityXamlServices.CreateBuilderReader(new XamlXmlReader(ofd.FileName, xx));

does work