diff --git a/WpfOpenGLSubwindowing/WpfOpenGLSubwindowing/Models/skull_source.txt b/WpfOpenGLSubwindowing/WpfOpenGLSubwindowing/Models/skull_source.txt
new file mode 100644
index 0000000..43e1516
--- /dev/null
+++ b/WpfOpenGLSubwindowing/WpfOpenGLSubwindowing/Models/skull_source.txt
@@ -0,0 +1 @@
+https://free3d.com/3d-model/skull-v3--785914.html
diff --git a/WpfOpenGLSubwindowingClasses/WpfOpenGLSubwindowingClasses/WpfOpenGLSubwindowingClasses.csproj b/WpfOpenGLSubwindowingClasses/WpfOpenGLSubwindowingClasses/WpfOpenGLSubwindowingClasses.csproj
index b2490ee..8110e70 100644
--- a/WpfOpenGLSubwindowingClasses/WpfOpenGLSubwindowingClasses/WpfOpenGLSubwindowingClasses.csproj
+++ b/WpfOpenGLSubwindowingClasses/WpfOpenGLSubwindowingClasses/WpfOpenGLSubwindowingClasses.csproj
@@ -16,16 +16,16 @@
 
   <ItemGroup>
     <Content Include="Shaders\BasicShader.frag">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
     </Content>
     <Content Include="Shaders\BasicShader.vert">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
     </Content>
     <Content Include="Shaders\ColorShader.frag">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
     </Content>
     <Content Include="Shaders\ColorShader.vert">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
     </Content>
   </ItemGroup>