message: Improve an error message
diff: @@ -279,7 +279,6 @@ void AliPerformanceTPC::Init()
  fAnalysisFolder = CreateFolder("folderTPC","Analysis Resolution Folder");
  if(!fUseSparse) fFolderObj = new TObjArray;
  -
  // set pt bins
  Int_t nPtBins = 50;
  Double_t ptMin = 1.e-2, ptMax = 20.;
  @@ -797,7 +796,7 @@ void AliPerformanceTPC::Exec(AliMCEvent* const mcEvent, AliVEvent *const vEvent,
  if(!bUseMC && GetTriggerClass()) {
  Bool_t isEventTriggered = vEvent->IsTriggerClassFired(GetTriggerClass());
  if(!isEventTriggered) {
  - printf("ERROR: Could not determine trigger class");
  + printf("ERROR: Could not determine trigger class (requested: %s)\n", GetTriggerClass());
  return;
  }
  }
  