Something

Index: firmware/mpeg.c
===================================================================
--- firmware/mpeg.c     (revision 13770)
+++ firmware/mpeg.c     (working copy)
@@ -1956,7 +1956,7 @@
                         mpeg_file = open(delayed_filename, O_WRONLY|O_CREAT);

                         if (mpeg_file < 0)
-                            panicf("recfile: %d", mpeg_file);
+                            panicf("recfile: %s", delayed_filename);
                     }

                     amount_to_save = save_endpos - audiobuf_read;