The file source/processes/hadronic/cross_sections/src/G4PhotoNuclearCrossSection.cc has two lines missing from it: 134,135d133 < GDR.push_back(lastGDR); // added GDR, AH 10/7/02 < HEN.push_back(lastHEN); // added HEN, AH 10/7/02 in lines 134 and 135 i.e. immediately before: eTH.push_back(lastTH); // Threshold Energy spA.push_back(lastSP); // Pomeron Shadowing Without these extra lines it is impossible to use the photonuclear process with Geant4.1
Problem fixed in patch-01. Thanks.