Index: generic/nsf.c
===================================================================
diff -u -N -rc64f818543a3e40ed1fafcc58c50324448b39266 -r3ed6440e2cbe7612bba89469b3c44c376d857338
--- generic/nsf.c	(.../nsf.c)	(revision c64f818543a3e40ed1fafcc58c50324448b39266)
+++ generic/nsf.c	(.../nsf.c)	(revision 3ed6440e2cbe7612bba89469b3c44c376d857338)
@@ -14207,31 +14207,24 @@
 
   } else { /* no unknown called, this is the built-in unknown handler */
     Tcl_Obj *tailMethodObj = NULL;
-    fprintf(stderr, "UNKNOWN objv[1] %s\n", ObjStr(objv[1]));
     if (objc > 1 && ((*methodName) == '-' || (unknownObj && objv[0] == unknownObj))) {
       int length;
+      tailMethodObj = objv[1];
       if (Tcl_ListObjLength(interp, objv[1], &length) == TCL_OK) {
         if (length > 1) {
           Tcl_ListObjIndex(interp, objv[1], length - 1, &tailMethodObj);
-        } else {
-          tailMethodObj = objv[1];
-        }
-      } else {
-        /* The first ("method") argument to unknown is an invalid list, yet a valid message */
-        fprintf(stderr, "UNKNOWN2 objv[1] %s\n", ObjStr(objv[1]));
-        tailMethodObj = objv[1];
+        } 
       }
     }
-    fprintf(stderr, "tail %s MethodName(tail) %s\n", ObjStr(tailMethodObj), MethodName(tailMethodObj));
     result = NsfPrintError(interp, "%s: unable to dispatch method '%s'",
                            ObjectName_(object), (tailMethodObj != NULL) ? MethodName(tailMethodObj) : methodName);
   }
-
+  
   /*
    * Reset interp state, unknown has been fired.
    */
   rst->unknown = 0;
-
+  
   return result;
 }