Crash on Handle(Geom_Curve) aCurve = BRep_Tool::Curve(anEdge, s0, s1);

for (TopExp_Explorer aSurfExp(aShape, TopAbs_FACE); aSurfExp.More(); aSurfExp.Next())
{

     TopoDS_Face aFace = TopoDS::Face(aSurfExp.Current());

     for (TopExp_Explorer aWireExp(aFace, TopAbs_WIRE); aWireExp.More(); aWireExp.Next())
     {

          TopoDS_Wire aWire = TopoDS::Wire(aWireExp.Current());

          cout << "Wire" << endl;

          for (TopExp_Explorer anEdgeExp(aWireExp.Current(), TopAbs_EDGE); anEdgeExp.More(); anEdgeExp.Next())
          {

               TopoDS_Edge anEdge = TopoDS::Edge(anEdgeExp.Current());

               cout << "Edge" << endl;

               double s0, s1;
     
               Handle(Geom_Curve) aCurve = BRep_Tool::Curve(anEdge, s0, s1);

               GeomLProp_CLProps props(aCurve, (s0 + s1)*0.5, 2, Precision::Confusion());
               double aCurvature = props.Curvature();

               cout << "Curvature: " << aCurvature << endl;

          }
     }
}