Index: /trunk/DataStore/scripts/dsproductls
===================================================================
--- /trunk/DataStore/scripts/dsproductls	(revision 25575)
+++ /trunk/DataStore/scripts/dsproductls	(revision 25576)
@@ -60,4 +60,9 @@
 print "# uri fileset datetime type\n";
 foreach my $fs (@$data) {
+    if (!defined $fs->uri) {
+        print STDERR "uri is not defined!\n";
+        print "uri is not defined!\n";
+        next;
+    }
     print $fs->uri, " ", $fs->fileset, " ", $fs->datetime, " ", $fs->type;
     if ($extra) {