Index: applications/editors/josm/plugins/roadsigns/build.xml
===================================================================
--- applications/editors/josm/plugins/roadsigns/build.xml	(revision 30948)
+++ applications/editors/josm/plugins/roadsigns/build.xml	(revision 30962)
@@ -50,4 +50,5 @@
                 <attribute name="Plugin-Mainversion" value="${plugin.main.version}"/>
                 <attribute name="Plugin-Version" value="${version.entry.commit.revision}"/>
+                <attribute name="Plugin-Canloadatruntime" value="true"/>
             </manifest>
         </jar>
Index: applications/editors/josm/plugins/roadsigns/src/org/openstreetmap/josm/plugins/roadsigns/RoadSignsPlugin.java
===================================================================
--- applications/editors/josm/plugins/roadsigns/src/org/openstreetmap/josm/plugins/roadsigns/RoadSignsPlugin.java	(revision 30948)
+++ applications/editors/josm/plugins/roadsigns/src/org/openstreetmap/josm/plugins/roadsigns/RoadSignsPlugin.java	(revision 30962)
@@ -72,4 +72,5 @@
         PropertiesDialog.pluginHook.add(btn);
         PropertiesDialog.pluginHook.setLayout(new FlowLayout(FlowLayout.CENTER, 0, 0));
+        PropertiesDialog.pluginHook.revalidate();
     }