message: Bug fix: particle UniqueID was not retrieved before writing stack!
diff: @@ -423,6 +423,7 @@ void AliGenHijing::Generate()
  if (pSelected[i]) {
  kf = iparticle->GetPdgCode();
  ks = iparticle->GetStatusCode();
  + ksp = iparticle->GetUniqueID();
  p[0] = iparticle->Px();
  p[1] = iparticle->Py();
  p[2] = iparticle->Pz() * sign;
  