I set a user limits to all hadrons and, following examples/novice/N05, I do like in G4double ExN05MinEkineCuts::PostStepGetPhysicalInteractionLength( rangeNow = G4EnergyLossTables::GetRange(aParticleDef,eKine,aMateri al); but when the particle is, for example a B+, the tables are not there and I get a G4Exception: G4Exception("G4EnergyLossTables::GetTables: table not found")