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42 msg =
" You are instantiating G4UserStackingAction BEFORE your\n";
43 msg +=
"G4VUserPhysicsList is instantiated and assigned to G4RunManager.\n";
44 msg +=
" Such an instantiation is prohibited by Geant4 version 8.0. To fix this problem,\n";
45 msg +=
"please make sure that your main() instantiates G4VUserPhysicsList AND\n";
46 msg +=
"set it to G4RunManager before instantiating other user action classes\n";
47 msg +=
"such as G4UserStackingAction.";
48 G4Exception(
"G4UserStackingAction::G4UserStackingAction()",