diff -r d57b86b1867a -r dc268b18d709 userlibandfileserver/fileserver/smassstorage/cbulkonlytransportusbcldd.cpp
--- a/userlibandfileserver/fileserver/smassstorage/cbulkonlytransportusbcldd.cpp	Mon Sep 13 15:16:07 2010 +0100
+++ b/userlibandfileserver/fileserver/smassstorage/cbulkonlytransportusbcldd.cpp	Wed Sep 22 10:53:45 2010 +0100
@@ -474,6 +474,7 @@
 
 void CBulkOnlyTransportUsbcLdd::ActivateDeviceStateNotifier()
 	{
+    __ASSERT_DEBUG(iDeviceStateNotifier, User::Panic(KUsbMsSvrPncCat, EMsCDeviceStateNotifierNull));
 	iDeviceStateNotifier->Activate();
 	}