Hi,
it seems that the Pythia setting “SoftQCD:minbias = on” is not recognised. To start playing with Pythia in ROOT, you can replace the three lines
pythia8->ReadString("SoftQCD:minbias = on");
pythia8->ReadString("SoftQCD:singleDiffractive = on");
pythia8->ReadString("SoftQCD:doubleDiffractive = on");
in the tutorial with
pythia8->ReadString("HardQCD:all = on");
I hope this can get you started. Meanwhile, I am investigating the issue.
As for executing main01.cc as a macro, this is conceptually wrong. This is a program meant to be compiled.
Cheers,
Danilo
Cheers,
Danilo