Index: src/chext/DropMenuExt.cpp
===================================================================
diff -u -N -r6609ba39811176f4803f0556db3da30e9e457b9d -r3732b8ed8b65619c1000598c843c2c627186427c
--- src/chext/DropMenuExt.cpp	(.../DropMenuExt.cpp)	(revision 6609ba39811176f4803f0556db3da30e9e457b9d)
+++ src/chext/DropMenuExt.cpp	(.../DropMenuExt.cpp)	(revision 3732b8ed8b65619c1000598c843c2c627186427c)
@@ -26,13 +26,17 @@
 #include "ShellExtensionVerifier.h"
 #include "HResultFormatter.h"
 
+extern std::atomic<long> g_DllRefCount;
+
 /////////////////////////////////////////////////////////////////////////////
 // CDropMenuExt
 
 CDropMenuExt::CDropMenuExt() :
 	m_piShellExtControl(nullptr),
 	m_spLog(GetLogger(L"CDropMenuExt"))
 {
+	++g_DllRefCount;
+
 	HRESULT hResult = CoCreateInstance(CLSID_CShellExtControl, nullptr, CLSCTX_ALL, IID_IShellExtControl, (void**)&m_piShellExtControl);
 
 	LOG_HRESULT(m_spLog, hResult) << L"Create instance of ShellExtControl";
@@ -45,6 +49,8 @@
 		m_piShellExtControl->Release();
 		m_piShellExtControl = nullptr;
 	}
+
+	--g_DllRefCount;
 }
 
 STDMETHODIMP CDropMenuExt::QueryInterface(REFIID riid, LPVOID FAR *ppvObject)