Index: src/ch/MainWnd.cpp
===================================================================
diff -u -N -rf6c4389122d92e5f84a509e9be0facebac429151 -rd0fdcc905035e648382256101a3d99f429af6d56
--- src/ch/MainWnd.cpp	(.../MainWnd.cpp)	(revision f6c4389122d92e5f84a509e9be0facebac429151)
+++ src/ch/MainWnd.cpp	(.../MainWnd.cpp)	(revision d0fdcc905035e648382256101a3d99f429af6d56)
@@ -1789,6 +1789,9 @@
 
 BOOL CMainWnd::OnCopyData(CWnd* pWnd, COPYDATASTRUCT* pCopyDataStruct) 
 {
+	if(!GetApp()->IsShellExtEnabled())
+		return FALSE;
+
 	// copying or moving ?
 	bool bMove=false;
 	switch(pCopyDataStruct->dwData & OPERATION_MASK)