Run your exe with the /pbdebug argument

e.g.
   prog.exe /pbdebug

A file called prog.dbg will be created in your working directory.

This is a useful feature if you application crashes unexpectedly and you want to know what script was being executed at the time of the crash.

It is also useful if the exe fails and the development version is ok.

You need to this dll to run traces.
  PBTRA050.DLL