Index: /trunk/psLib/src/types/psList.c
===================================================================
--- /trunk/psLib/src/types/psList.c	(revision 12313)
+++ /trunk/psLib/src/types/psList.c	(revision 12314)
@@ -7,6 +7,6 @@
  *  @author Joshua Hoblitt, University of Hawaii
  *
- *  @version $Revision: 1.65 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2007-03-08 04:10:45 $
+ *  @version $Revision: 1.66 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2007-03-08 19:51:59 $
  *
  *  Copyright 2004-2005 Maui High Performance Computing Center, University of Hawaii
@@ -437,4 +437,10 @@
     PS_ASSERT_LIST_NON_NULL(list, NULL);
 
+    if (list->head == NULL) { // list empty?
+        psError(PS_ERR_BAD_PARAMETER_NULL, true,
+                _("Specified psList reference is empty."));
+        return NULL;
+    }
+
     psListIterator* iterator = list->iterators->data[0];