Hi, I always get a core dump when I am trying to run an analysis macro that was created via MakeSelector() in the compiled mode. First I loaded some root files into a chain and then I did the following commands: root [1] chain.MakeSelector("selector") Info in <TTreePlayer::MakeClass>: Files: selector.h and selector.C generated from Tree: h45 (Int_t)0 root [2] chain.Process("selector.C") (Int_t)0 root [3] chain.Process("selector.C+") Warning in <ACLiC>: script has already been loaded in interpreted mode Warning in <ACLiC>: unloading /home/frank/analysis/./selector.C and compiling it Info in <TUnixSystem::ACLiC>: creating shared library /home/frank/analysis/./selector_C.so Note: Link requested for undefined class TBrowser (ignore this message) FILE: LINE:0 Note: Link requested for undefined class TMethod (ignore this message) FILE: LINE:0 Note: Link requested for undefined class TTimer (ignore this message) FILE: LINE:0 [...] Note: Link requested for undefined class TMatrix (ignore this message) FILE: LINE:0 Note: Link requested for undefined class TMatrixD (ignore this message) FILE: LINE:0 Error in <ACLiC>: Dictionary generation failed with a core dump! Error in <TSelector::GetSelector>: file selector.C+ does not have a valid class deriving from TSelector (Int_t)(-1) root [4] So, the program is running in interpreted mode but not in the compiled version. Do I miss any steps before I can run the program in the compiled version? Remember, I did not change anything in the files selector.C and .h between the generation and the run. I am using RooT 3.10-01 and gcc 2.95.3 on Mandrake 8. Thanks for your help. Frank
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