diff --git a/Samples/Win7Samples/multimedia/mediafoundation/evrpresenter/Presenter.cpp b/Samples/Win7Samples/multimedia/mediafoundation/evrpresenter/Presenter.cpp
index 00292d39..f32ae940 100644
--- a/Samples/Win7Samples/multimedia/mediafoundation/evrpresenter/Presenter.cpp
+++ b/Samples/Win7Samples/multimedia/mediafoundation/evrpresenter/Presenter.cpp
@@ -1409,7 +1409,8 @@ HRESULT EVRCustomPresenter::CreateOptimalVideoType(IMFMediaType* pProposedType,
 
     // Helper object to manipulate the optimal type.
     VideoType mtOptimal;
-
+    mtOptimal.CreateEmptyType();
+    
     // Clone the proposed type.
     CHECK_HR(hr = mtOptimal.CopyFrom(pProposedType));
 
@@ -2415,4 +2416,4 @@ HRESULT SetMixerSourceRect(IMFTransform *pMixer, const MFVideoNormalizedRect& nr
     return hr;
 }
 
-#pragma warning( pop )
\ No newline at end of file
+#pragma warning( pop )
diff --git a/Samples/Win7Samples/multimedia/mediafoundation/evrpresenter/dllmain.cpp b/Samples/Win7Samples/multimedia/mediafoundation/evrpresenter/dllmain.cpp
index c37a09f4..4af5c668 100644
--- a/Samples/Win7Samples/multimedia/mediafoundation/evrpresenter/dllmain.cpp
+++ b/Samples/Win7Samples/multimedia/mediafoundation/evrpresenter/dllmain.cpp
@@ -65,6 +65,11 @@ BOOL APIENTRY DllMain( HANDLE hModule,
     return TRUE;
 }
 
+STDAPI CreateEVRCustomPresenter(REFIID riid, void** ppvObject)
+{
+    return EVRCustomPresenter::CreateInstance(NULL, riid, ppvObject);
+}
+
 STDAPI DllCanUnloadNow()
 {
     if (!ClassFactory::IsLocked())