Hi ROOTers, According to examples I do the folloging: root [0] TChain chain("di-muon ntuple"); root [1] chain.Add("CA3871_jpsi.root"); I get this: Error in <TChain::Add>: cannot find tree with name di-muon ntuple although I am pretty sure that this ntuple exists in the file. if I use TBrowser to open file I am able to get to that ntuple and look into contents. What am I doing wrong? Dmitri Litvintsev /----------------------------------------------------------\ | Tel: (630) 840 5005 | | FAX: (630) 840 2968 | | office: 169-E CDF Trailers | | E-mail: litvinse@fnal.gov | \----------------------------------------------------------/
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