Index: Core/Components/src/Core.Components.Gis.IO/Readers/PointShapeFileReader.cs
===================================================================
diff -u -r04b631b486b742c5339deb1d5504bb13ab5e248d -r024fbf441138ee549e8da563fccdfbdc51ded385
--- Core/Components/src/Core.Components.Gis.IO/Readers/PointShapeFileReader.cs	(.../PointShapeFileReader.cs)	(revision 04b631b486b742c5339deb1d5504bb13ab5e248d)
+++ Core/Components/src/Core.Components.Gis.IO/Readers/PointShapeFileReader.cs	(.../PointShapeFileReader.cs)	(revision 024fbf441138ee549e8da563fccdfbdc51ded385)
@@ -128,7 +128,7 @@
 
         private FeatureBasedMapData ConvertPointFeaturesToMapPointData(IEnumerable<IFeature> featureList, string name)
         {
-            IEnumerable<MapFeature> mapFeatures = featureList.Select(CreateMapFeatureForPointFeature);
+            MapFeature[] mapFeatures = featureList.Select(CreateMapFeatureForPointFeature).ToArray();
             return new MapPointData(mapFeatures, name);
         }
 
Index: Core/Components/src/Core.Components.Gis.IO/Readers/PolygonShapeFileReader.cs
===================================================================
diff -u -rd6a913bdd073dce236a3f18d34bf415f41b54a00 -r024fbf441138ee549e8da563fccdfbdc51ded385
--- Core/Components/src/Core.Components.Gis.IO/Readers/PolygonShapeFileReader.cs	(.../PolygonShapeFileReader.cs)	(revision d6a913bdd073dce236a3f18d34bf415f41b54a00)
+++ Core/Components/src/Core.Components.Gis.IO/Readers/PolygonShapeFileReader.cs	(.../PolygonShapeFileReader.cs)	(revision 024fbf441138ee549e8da563fccdfbdc51ded385)
@@ -135,7 +135,7 @@
 
         private FeatureBasedMapData ConvertPolygonFeaturesToMapPointData(IEnumerable<IFeature> featureList, string name)
         {
-            var mapFeatures = featureList.Select(CreateMapFeatureForPolygonFeature);
+            MapFeature[] mapFeatures = featureList.Select(CreateMapFeatureForPolygonFeature).ToArray();
             return new MapPolygonData(mapFeatures, name);
         }