Index: C:/josm/core/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSStyleSource.java
===================================================================
--- C:/josm/core/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSStyleSource.java	(revision 17076)
+++ C:/josm/core/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSStyleSource.java	(working copy)
@@ -271,7 +271,7 @@
         settingGroups.clear();
         MultiCascade mc = new MultiCascade();
         MultiCascade mcGroups = new MultiCascade();
-        Node n = new Node();
+        Node n = new Node(1);
         n.put("lang", LanguageInfo.getJOSMLocaleCode());
         // create a fake environment to read the meta data block
         Environment env = new Environment(n, mc, "default", this);
@@ -323,7 +323,7 @@
     private Cascade constructSpecial(String type) {
 
         MultiCascade mc = new MultiCascade();
-        Node n = new Node();
+        Node n = new Node(1);
         String code = LanguageInfo.getJOSMLocaleCode();
         n.put("lang", code);
         // create a fake environment to read the meta data block