Index: trunk/src/org/openstreetmap/josm/actions/upload/ValidateUploadHook.java
===================================================================
--- trunk/src/org/openstreetmap/josm/actions/upload/ValidateUploadHook.java	(revision 6785)
+++ trunk/src/org/openstreetmap/josm/actions/upload/ValidateUploadHook.java	(revision 6786)
@@ -45,4 +45,5 @@
     public boolean checkUpload(APIDataSet apiDataSet) {
 
+        OsmValidator.initializeTests();
         Collection<Test> tests = OsmValidator.getEnabledTests(true);
         if (tests.isEmpty())