where is the full stack trace assigned to its id

[Peter Hercek]

Hi,

GHC version: win32 6.6.1

App was compiled with ghc -make -prof -auto-all <files>
... and run with app.exe <appSpecificOptions> +RTS -hc

The result is that app.exe.hp contains the sample items
in the format like
(651)/createAndRunWindows/...	180

The question is where can I find the full stack trace
  corresponding to 651 identification number?

I expected it to be in app.exe.prof (as it is with -hr
  option), but that file is empty. Do I miss some other
  RTS option?

Peter.