Hi, I have a root file with some tuples. when I open open with TBrowser, it shows values at for example 4 in the figure below. [Screenshot 2025-07-02 at 11.40.48 PM] but when I use a code, or simply Draw it via terminal: TFile f("f0_output_eventsfivetev35.root"); TList *l = (TList*)f.Get("htupLi…

Try: cout << t->GetEntry(0) << endl; cout << t->GetEntry(15955) << endl; cout << t->GetEntry(15956) << endl; cout << t->GetEntry(19850) << endl; cout << t->GetEntry(19851) << endl; @pcanal Maybe TTree:Draw (and similar) should be protected against “I/O errors”. @Marooz_Malik For saving multiple t…