Index: 2.0-ongoing-send-rename/gtk2_ardour/redirect_box.cc
===================================================================
--- 2.0-ongoing-send-rename/gtk2_ardour/redirect_box.cc	(revision 5338)
+++ 2.0-ongoing-send-rename/gtk2_ardour/redirect_box.cc	(working copy)
@@ -920,6 +920,11 @@
 	case Gtk::RESPONSE_ACCEPT:
         name_prompter.get_result (result);
         if (result.length()) {
+			if (ARDOUR_UI::instance()->the_editor().get_named_time_axis(result) != 0) {
+				ARDOUR_UI::instance()->popup_error (_("A track already exists with that name"));
+				return;
+			}
+
 			redirect->set_name (result, this);
 		}	
 		break;