message: protection against 0 division in old MC prods
diff: @@ -319,6 +319,8 @@ void AliAODCluster::SetClusterMCEdepFractionFromEdepArray(Float_t *array)
  Float_t totalE = 0;
  for (Int_t i = 0; i < fNLabel; i++) totalE+=array[i];
  + if ( totalE < 1.e-3 ) return ; // avoid 0 division in old MC prods.
  +
  // Set the fraction of energy per MC contributor in %
  for (Int_t i = 0; i < fNLabel; i++)
  fClusterMCEdepFraction[i] = TMath::Nint(array[i]/totalE*100.);
  