diff -r f85613f12947 -r dbd1c5e08735 mtpfws/mtpfw/dataproviders/devdp/src/cmtpdevicedp.cpp
--- a/mtpfws/mtpfw/dataproviders/devdp/src/cmtpdevicedp.cpp	Mon Jun 21 16:36:59 2010 +0300
+++ b/mtpfws/mtpfw/dataproviders/devdp/src/cmtpdevicedp.cpp	Thu Jul 15 19:35:12 2010 +0300
@@ -481,7 +481,7 @@
     
     __ASSERT_ALWAYS( isFolder, User::Leave( KErrArgument ));
     __ASSERT_ALWAYS( aParentHandle != KMTPHandleNone, User::Leave( KErrArgument ));
-    __ASSERT_ALWAYS( Framework().StorageMgr().ValidStorageId( aStorageId ), User::Invariant());
+    __ASSERT_ALWAYS( Framework().StorageMgr().ValidStorageId( aStorageId ), User::Leave( KErrArgument ));
 
     __FLOG_VA((_L16("Add Entry for Path:%S"), &aPath ));
     aObjectInfo.SetUint( CMTPObjectMetaData::EDataProviderId, Framework().DataProviderId() );