Hi, My code which worked fine with Root 3.10/02 is now broken with Root 4.00/04 (actually, yesterday's cvs version). I am running RH7.3 and I built Root with gcc 3.3.2 (not standard 7.3 compiler). I've tried to boil it down to the simplest possible program that exercises the bug: http://cyclo.mit.edu/~schol/testroot/ It's a simple class, based on Event in $ROOTSYS/test, that has one TClonesArray of simple Tracks. testroot.cc creates my.root with 1 event with 2 tracks testread.C reads the file. With Root 3.10/02 it all works as expected, but for Root 4.00/04 and later in cvs, I get root [0] .x testread.C nevent 1 TClonesArray::Streamer expecting class Ntrack 0 Any ideas, before I delve deeper? Kate
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