Index: applications/editors/josm/plugins/wmsplugin/src/wmsplugin/GeorefImage.java
===================================================================
--- applications/editors/josm/plugins/wmsplugin/src/wmsplugin/GeorefImage.java	(revision 6972)
+++ applications/editors/josm/plugins/wmsplugin/src/wmsplugin/GeorefImage.java	(revision 6984)
@@ -35,4 +35,6 @@
 
 	public void paint(Graphics g, NavigatableComponent nc) {
+		if (image == null || min == null || max == null) return;
+
 		Point minPt = nc.getPoint(min), maxPt = nc.getPoint(max);