Index: move.c
===================================================================
--- move.c	(revision 5284)
+++ move.c	(revision 5285)
@@ -107,13 +107,13 @@
 
 	if (Type == PCB_TYPE_ARC_POINT) {
 		/* moving the endpoint of an arc is not really a move, but a change of arc properties */
-		pcb_message(PCB_MSG_ERROR, "Unsupported: moving arc endpoint\n");
+		pcb_arc_set_angles((pcb_layer_t *)Ptr1, (pcb_arc_t *)Ptr2, pcb_crosshair.AttachedObject.start_angle, pcb_crosshair.AttachedObject.delta_angle);
 	}
 	else {
 		pcb_undo_add_obj_to_move(Type, Ptr1, Ptr2, Ptr3, DX, DY);
 		ptr2 = pcb_object_operation(&MoveFunctions, &ctx, Type, Ptr1, Ptr2, Ptr3);
-		pcb_undo_inc_serial();
 	}
+	pcb_undo_inc_serial();
 
 	pcb_draw_inhibit_dec();
 	pcb_draw();