[求助]用AE10.0+VS2010想做等值线，为何geoanalyst不能用？

//生成等值线
        private void MenuMadeContour_Click(object sender, EventArgs e)
        {
            IFeatureLayer pFeatureLayer = axMapControl1.get_Layer(0) as IFeatureLayer;
            IRaster pOutRaster = CreateRaster(pFeatureLayer);
            CreateContour(pOutRaster);

        }
 private IRaster CreateRaster(IFeatureLayer pFeatureLayer)
        {

            IInterpolationOp pInterpolationOp = new  RasterInterpolationOpClass();//调试运行到此时就会出现如下错误：
            ......

        }

private IRaster CreateRaster(IFeatureLayer pFeatureLayer)
        {

            IInterpolationOp pInterpolationOp = new  RasterInterpolationOpClass();//调试运行时会出现如下错误！
           ......
   }
出现的错误为：Visual Fortran run-time error,是何原因呢，如何解决！