Hi, I am using ROOT 3.02.07 on Windows. I am trying to use TRef and I seem to be running into a problem. I have a class like this, where I want to store a reference to another object: class McParticle : public TObject { const McParticle* getMother() const { return (McParticle*)m_mother.GetObject(); }; private: // This stores a reference to another object of type McParticle TRef m_mother; }; When I create a new ROOT file, and open it in ROOT interactively, I am able to retrieve the reference via the call to getMother(). However, if I attempt to do the same thing with a compiled program that uses ROOT, getMother() consistently returns null. Clearly there is something I do not understand. For example, suppose I have a TObjArray of McParticles, which I iterate over, here is an example call to retrieve the reference - which fails in compiled code: while (pRoot = (McParticle*)partIter.Next()) { McParticle *momRoot = pRoot->getMother(); In this particular case, all of the McParticles are stored to the same file and in the same branch... Thanks, Heather
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