Index: /trunk/src/org/openstreetmap/josm/gui/layer/gpx/ImportImagesAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/layer/gpx/ImportImagesAction.java	(revision 9304)
+++ /trunk/src/org/openstreetmap/josm/gui/layer/gpx/ImportImagesAction.java	(revision 9305)
@@ -42,4 +42,7 @@
 
     private static void addRecursiveFiles(List<File> files, File[] sel) {
+        if (sel == null) { // listFiles might return null
+            return;
+        }
         for (File f : sel) {
             if (f.isDirectory()) {