test svn commit, removing

[u/mrichter/AliRoot.git] / ANALYSIS / AliAnalysisManager.cxx

diff --git a/ANALYSIS/AliAnalysisManager.cxx b/ANALYSIS/AliAnalysisManager.cxx
index f400ae306ad33ef29e93d4afa06db7b13055c421..60bf868e62690447cdc38e0c85f4dc0bce5b87c9 100644 (file)
--- a/ANALYSIS/AliAnalysisManager.cxx
+++ b/ANALYSIS/AliAnalysisManager.cxx
@@ -779,6 +779,10 @@ void AliAnalysisManager::StartAnalysis(const char *type, TTree *tree, Long64_t n
    TString ttype = "TTree";
    if (tree->IsA() == TChain::Class()) {
       chain = (TChain*)tree;
+      if (!chain || !chain->GetListOfFiles()->First()) {
+         Error("StartAnalysis", "Cannot process null or empty chain...");
+         return;
+      }   
       ttype = "TChain";
    }