Index: /trunk/src/VBox/Main/src-client/GuestDnDTargetImpl.cpp
===================================================================
--- /trunk/src/VBox/Main/src-client/GuestDnDTargetImpl.cpp	(revision 59830)
+++ /trunk/src/VBox/Main/src-client/GuestDnDTargetImpl.cpp	(revision 59831)
@@ -1189,5 +1189,5 @@
                 {
                     LogFlowFunc(("Returning uMsg=%RU32\n", uMsg));
-                    rc = HGCM::Message::copyParms(pMsg->getCount(), pMsg->getParms(), pCBData->paParms);
+                    rc = HGCM::Message::copyParms(pCBData->paParms, pCBData->cParms,  pMsg->getParms(), pMsg->getCount());
                     if (RT_SUCCESS(rc))
                     {