Hi Alessandro, When you have a problem reading one event from a TTree, I suggest to activate the internal debug machinery from Root. Do the following: root > TFile f("myEventFile.root"); root > TTree *T = (TTree*)f.Get("mytree"); root > //set Tree branch Addresses here, then .. root > gDebug=2; //will activate internal Root debug root > T->GetEntry(0); having activated gDebug=2 will generate a long print-out with one line per member read from the Tree. Looking at the place where it crashes may give you some idea where to investigate. Rene brun Alessandro Thea wrote: > > Hi rooters, > I have a really annoying problem with an Event class. > Basically root crashes when I try to get an event from the tree. But not > always. This is why it's difficult so to find the reason of the crash. > Have you ever experienced anything like that? > > The Event file is quite long, I don't think is worth to attach it. > Anyway, do you have any suggestion where to look for? > > Thanks > > Alessandro Thea
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