<html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> </head> <body bgcolor="#FFFFFF" text="#000000"> Hello, I have been asked to use my rivet code to analyse some hepmc2g files that a colleague has produced from Sherpa 1.4.02. My issue is that my rivet analysis won't run over his samples but, when I copy his run card and use this to produce my own hepmc2g file the rivet analysis works fine. I can see that the difference between the hepmc files is the version number; he has used 2.06.05 and my files are 2.03.11. The error message I recieve is: <samp><cite><code>User-supplied cross-section = 2.551110e+01 pb Rivet 1.8.0 running on machine pplxwn34.physics.ox.ac.uk (x86_64) CommonIO::read_heavy_ion setting badbit. CommonIO::read_pdf_info setting badbit. CommonIO::read_vertex setting badbit. CommonIO::read_vertex setting badbit.</code></cite></samp> ... I belive this is due to the 2.06.05 hepmc file not having a heavy-ion line where it is expected. Could you tell me if there is a way to make rivet run over the 2.06.05 hepmc files? My setup is as follows: Rivet 1.8.0 setup from: <code>/afs/cern.ch/sw/lcg/external/MCGenerators/rivet/1.8.0/x86_64-slc5-gcc43-opt/rivetenv.sh</code> Agile 1.2.0 setup from: <code>/afs/cern.ch/sw/lcg/external/MCGenerators/agile/1.2.0/x86_64-slc5-gcc43-opt/agileenv.sh</code> Sherpa 1.4.0.2 from:<code> /afs/cern.ch/sw/lcg/external/MCGenerators/Sherpa/1.4.0.2/x86_64-slc5-gcc43-opt/</code> - used to create hepmc files HepMC 2.03.11 setup from both the rivetenv and agileenv scripts. Thank you for your time, James Henderson </body> </html>