Index: test/Common/DelftTools.Tests/DelftTools.Tests.csproj
===================================================================
diff -u -rd6ebde6f276f860d87f3b98524d6e84bc070f70e -rcedd555c4bb61b019885230ca6bf99165187eea7
--- test/Common/DelftTools.Tests/DelftTools.Tests.csproj	(.../DelftTools.Tests.csproj)	(revision d6ebde6f276f860d87f3b98524d6e84bc070f70e)
+++ test/Common/DelftTools.Tests/DelftTools.Tests.csproj	(.../DelftTools.Tests.csproj)	(revision cedd555c4bb61b019885230ca6bf99165187eea7)
@@ -80,6 +80,7 @@
       <HintPath>..\..\..\lib\SharpTestsEx.dll</HintPath>
     </Reference>
     <Reference Include="System" />
+    <Reference Include="System.Activities" />
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
@@ -134,6 +135,7 @@
     <Compile Include="Shell\Core\ApplicationPluginTest.cs" />
     <Compile Include="Shell\Core\DataItemInfoTest.cs" />
     <Compile Include="Shell\Core\Extensions\CompositeActivityExtensionsTest.cs" />
+    <Compile Include="Shell\Core\WorkFlow\ActivityTest.cs" />
     <Compile Include="Shell\Core\WorkFlow\BackgroundWorkerTest.cs" />
     <Compile Include="Shell\Core\WorkFlow\CompositeActivityTest.cs" />
     <Compile Include="Shell\Core\WorkFlow\FileImportActivityTest.cs" />