Index: trunk/src/org/openstreetmap/josm/gui/download/BoundingBoxSelection.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/download/BoundingBoxSelection.java	(revision 18233)
+++ trunk/src/org/openstreetmap/josm/gui/download/BoundingBoxSelection.java	(revision 18234)
@@ -115,6 +115,8 @@
         btnCopy.addMouseListener(new MouseAdapter() {
             @Override
-            public void mouseClicked(MouseEvent arg0) {
-                ClipboardUtils.copyString(gui.currentBounds.encodeAsString(","));
+            public void mouseClicked(MouseEvent e) {
+                if (gui.currentBounds != null) {
+                    ClipboardUtils.copyString(gui.currentBounds.encodeAsString(","));
+                }
             }
         });
@@ -124,5 +126,5 @@
         btnClear.addMouseListener(new MouseAdapter() {
             @Override
-            public void mouseClicked(MouseEvent arg0) {
+            public void mouseClicked(MouseEvent e) {
                 tfOsmUrl.setText("");
             }