Index: trunk/src/org/openstreetmap/josm/io/OsmReader.java
===================================================================
--- trunk/src/org/openstreetmap/josm/io/OsmReader.java	(revision 2090)
+++ trunk/src/org/openstreetmap/josm/io/OsmReader.java	(revision 2092)
@@ -339,5 +339,5 @@
                 current.rememberTag(key, value);
             } else {
-                throwException(tr("Undefined element ''{0}'' found in input stream. Aborting.", qName));
+                System.out.println(tr("Warning: Undefined element ''{0}'' found in input stream. Skipping.", qName));
             }
         }