Index: /trunk/src/org/openstreetmap/josm/io/OsmReader.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/io/OsmReader.java	(revision 4267)
+++ /trunk/src/org/openstreetmap/josm/io/OsmReader.java	(revision 4268)
@@ -120,7 +120,7 @@
 
             try {
-                if (qName.equals("osm")) {
+                if (qName.equals("osm") || qName.equals("osmChange")) {
                     if (atts == null) {
-                        throwException(tr("Missing mandatory attribute ''{0}'' of XML element {1}.", "version", "osm"));
+                        throwException(tr("Missing mandatory attribute ''{0}'' of XML element {1}.", "version", qName));
                     }
                     String v = atts.getValue("version");