Index: /trunk/src/org/openstreetmap/josm/gui/mappaint/MapPaintStyles.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/mappaint/MapPaintStyles.java	(revision 13435)
+++ /trunk/src/org/openstreetmap/josm/gui/mappaint/MapPaintStyles.java	(revision 13436)
@@ -305,5 +305,10 @@
 
         for (SourceEntry entry : sourceEntries) {
-            styles.add(fromSourceEntry(entry));
+            try {
+                styles.add(fromSourceEntry(entry));
+            } catch (IllegalArgumentException e) {
+                Logging.error("Failed to load map paint style {0}", entry);
+                Logging.error(e);
+            }
         }
         for (StyleSource source : styles.getStyleSources()) {