Index: /issm/trunk-jpl/src/c/datastructures/DataSet.cpp
===================================================================
--- /issm/trunk-jpl/src/c/datastructures/DataSet.cpp	(revision 19630)
+++ /issm/trunk-jpl/src/c/datastructures/DataSet.cpp	(revision 19631)
@@ -421,5 +421,5 @@
 	vector<Object*>::iterator object;
 
-	if(this==NULL)_error_("trying to echo a NULL dataset");
+	_assert_(this);
 
 	_printf0_("DataSet echo: " << objects.size() << " objects\n");
@@ -437,5 +437,5 @@
 	vector<Object*>::iterator object;
 
-	if(this==NULL)_error_("trying to echo a NULL dataset");
+	_assert_(this);
 
 	_printf0_("DataSet echo: " << objects.size() << " objects\n");