I have the segmentation violation in my AMD-64 Opteron, Gate-3.0, Linux ws4.0. The message are:  *** Break *** segmentation violation  Generating stack trace... /usr/bin/addr2line: 'Gate': No such file /usr/bin/addr2line: 'Gate': No such file /usr/bin/addr2line: 'Gate': No such file /usr/bin/addr2line: 'Gate': No such file /usr/bin/addr2line: 'Gate': No such file /usr/bin/addr2line: 'Gate': No such file  0x0000000000577b20 in GateDigitizer::Digitize() + 0x1f0 from Gate  0x0000000000586f5e in GateOutputMgr::RecordEndOfEvent(G4Event const*) + 0x8e from Gate  0x000000000057d46f in GateEventAction::EndOfEventAction(G4Event const*) + 0x8f from Gate  0x000000000085969a in G4EventManager::DoProcessing(G4Event*) + 0x6da from Gate  0x000000000084c061 in G4RunManager::DoEventLoop(int, char const*, int) + 0xd1 from Gate  0x000000000084a941 in G4RunManager::BeamOn(int, char const*, int) + 0x91 from Gate  0x000000000056f3cb in GateApplicationMgr::StartDAQ() + 0x11b from Gate  0x00000000005c1d4b in GateApplicationMgrMessenger::SetNewValue(G4UIcommand*, G4String) + 0x12b from Gate  0x0000000000c06f68 in G4UIcommand::DoIt(G4String) + 0x388 from Gate  0x0000000000c107c2 in G4UImanager::ApplyCommand(char const*) + 0x482 from Gate  0x0000000000c1865d in G4UIbatch::SessionStart() + 0x3fd from Gate  0x0000000000c0d755 in G4UImanager::ExecuteMacroFile(char const*) + 0x45 from Gate  0x00000000005af1b0 in GateUIcontrolMessenger::LaunchMacroFile(G4String) + 0xb0 from Gate  0x00000000005af327 in GateUIcontrolMessenger::SetNewValue(G4UIcommand*, G4String) + 0xd7 from Gate  0x0000000000c06f68 in G4UIcommand::DoIt(G4String) + 0x388 from Gate  0x0000000000c107c2 in G4UImanager::ApplyCommand(char const*) + 0x482 from Gate  0x000000000056db61 in main + 0x751 from Gate  0x0000003db6f1c3fb in __libc_start_main + 0xdb from /lib64/tls/libc.so.6  0x000000000056c89a in TApplicationImp::ShowMembers(TMemberInspector&, char*) + 0xa2 from Gate Abort Please help me to overcome this problem. Thanks. Xiaodong