diff -r 2014ca87e772 -r 235a7fc86938 imagehandlingutilities/thumbnailmanager/thumbnailserver/src/thumbnailserver.cpp
--- a/imagehandlingutilities/thumbnailmanager/thumbnailserver/src/thumbnailserver.cpp	Tue Jan 26 15:18:05 2010 +0200
+++ b/imagehandlingutilities/thumbnailmanager/thumbnailserver/src/thumbnailserver.cpp	Tue Feb 02 00:23:15 2010 +0200
@@ -436,6 +436,7 @@
     {
     if( !aBitmap )
         {
+        TN_DEBUG1( "CThumbnailServer::AddBitmapToPoolL() - KErrArgument");
         User::Leave( KErrArgument );
         }
     TN_DEBUG4( 
@@ -911,6 +912,7 @@
     {
     if(aPath.Length() < 3 || aPath.Length() > KMaxPath)
         {
+        TN_DEBUG1( "CThumbnailServer::StoreForPathL() - KErrArgument");
         User::Leave(KErrArgument);
         }
     TInt drive = 0;