Index: src/Plugins/Wti/Wti.IO/Wti.IO.csproj
===================================================================
diff -u -rb9fb2479ca915755aa087e7898b9a78eb1e4f0c0 -r2cc167229383dbc03827939d66d50db5b651dba5
--- src/Plugins/Wti/Wti.IO/Wti.IO.csproj	(.../Wti.IO.csproj)	(revision b9fb2479ca915755aa087e7898b9a78eb1e4f0c0)
+++ src/Plugins/Wti/Wti.IO/Wti.IO.csproj	(.../Wti.IO.csproj)	(revision 2cc167229383dbc03827939d66d50db5b651dba5)
@@ -34,6 +34,7 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\..\..\GlobalAssembly.cs">
@@ -42,6 +43,10 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\..\..\Common\DelftTools.Shell.Core\DelftTools.Shell.Core.csproj">
+      <Project>{82b61d20-fd4b-49be-9252-5bf6e3ee4666}</Project>
+      <Name>DelftTools.Shell.Core</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\Common\Wti.Base\Wti.Base.csproj">
       <Project>{c90b77da-e421-43cc-b82e-529651bc21ac}</Project>
       <Name>Wti.Base</Name>