diff --git a/src/DotRecast.Recast.Demo/Tools/JumpLinkBuilderSampleTool.cs b/src/DotRecast.Recast.Demo/Tools/JumpLinkBuilderSampleTool.cs
index 7a33b6b..4b31c47 100644
--- a/src/DotRecast.Recast.Demo/Tools/JumpLinkBuilderSampleTool.cs
+++ b/src/DotRecast.Recast.Demo/Tools/JumpLinkBuilderSampleTool.cs
@@ -16,6 +16,7 @@ freely, subject to the following restrictions:
 3. This notice may not be removed or altered from any source distribution.
 */
 
+using System.Linq;
 using DotRecast.Core.Numerics;
 using DotRecast.Detour.Extras.Jumplink;
 using DotRecast.Recast.Demo.Draw;
@@ -96,13 +97,25 @@ public class JumpLinkBuilderSampleTool : ISampleTool
 
         if (build || _cfg.buildOffMeshConnections)
         {
-            if (0 < _sample.GetRecastResults().Count)
+            do
             {
+                if (0 >= _sample.GetRecastResults().Count)
+                {
+                    Logger.Error("build navmesh");
+                    break;
+                }
+
+                if (_sample.GetRecastResults().Any(x => null == x.SolidHeightfiled))
+                {
+                    Logger.Error("Tick 'Keep Itermediate Results' option");
+                    break;
+                }
+
                 var geom = _sample.GetInputGeom();
                 var settings = _sample.GetSettings();
 
                 _tool.Build(geom, settings, _sample.GetRecastResults(), _cfg);
-            }
+            } while (false);
         }
 
         ImGui.NewLine();
diff --git a/src/DotRecast.Recast.Toolset/Builder/TileNavMeshBuilder.cs b/src/DotRecast.Recast.Toolset/Builder/TileNavMeshBuilder.cs
index 15a431e..5542c25 100644
--- a/src/DotRecast.Recast.Toolset/Builder/TileNavMeshBuilder.cs
+++ b/src/DotRecast.Recast.Toolset/Builder/TileNavMeshBuilder.cs
@@ -101,7 +101,7 @@ namespace DotRecast.Recast.Toolset.Builder
                 filterLowHangingObstacles, filterLedgeSpans, filterWalkableLowHeightSpans,
                 SampleAreaModifications.SAMPLE_AREAMOD_WALKABLE, true);
             RcBuilder rcBuilder = new RcBuilder();
-            return rcBuilder.BuildTiles(geom, cfg, Environment.ProcessorCount + 1, Task.Factory);
+            return rcBuilder.BuildTiles(geom, cfg, keepInterResults, buildAll, Environment.ProcessorCount + 1, Task.Factory);
         }
 
         public DtNavMesh BuildNavMesh(IInputGeomProvider geom, List<DtMeshData> meshData, float cellSize, int tileSize, int vertsPerPoly)
diff --git a/src/DotRecast.Recast/RcBuilder.cs b/src/DotRecast.Recast/RcBuilder.cs
index f0c6ed2..5583f42 100644
--- a/src/DotRecast.Recast/RcBuilder.cs
+++ b/src/DotRecast.Recast/RcBuilder.cs
@@ -47,9 +47,8 @@ namespace DotRecast.Recast
             _progressListener = progressListener;
         }
 
-        public List<RcBuilderResult> BuildTiles(IInputGeomProvider geom, RcConfig cfg,
-            int threads = 0, TaskFactory taskFactory = null, CancellationToken cancellation = default,
-            bool keepInterResults = false, bool buildAll = true)
+        public List<RcBuilderResult> BuildTiles(IInputGeomProvider geom, RcConfig cfg, bool keepInterResults, bool buildAll,
+            int threads = 0, TaskFactory taskFactory = null, CancellationToken cancellation = default)
         {
             RcVec3f bmin = geom.GetMeshBoundsMin();
             RcVec3f bmax = geom.GetMeshBoundsMax();
diff --git a/test/DotRecast.Detour.Test/TestTiledNavMeshBuilder.cs b/test/DotRecast.Detour.Test/TestTiledNavMeshBuilder.cs
index 835c247..c03623e 100644
--- a/test/DotRecast.Detour.Test/TestTiledNavMeshBuilder.cs
+++ b/test/DotRecast.Detour.Test/TestTiledNavMeshBuilder.cs
@@ -78,7 +78,7 @@ public class TestTiledNavMeshBuilder
             true, true, true,
             SampleAreaModifications.SAMPLE_AREAMOD_GROUND, true);
         RcBuilder rcBuilder = new RcBuilder();
-        List<RcBuilderResult> rcResult = rcBuilder.BuildTiles(geom, cfg);
+        List<RcBuilderResult> rcResult = rcBuilder.BuildTiles(geom, cfg, false, true);
 
         // Add tiles to nav mesh
 
diff --git a/test/DotRecast.Recast.Test/RecastTileMeshTest.cs b/test/DotRecast.Recast.Test/RecastTileMeshTest.cs
index 2abb9df..8d98546 100644
--- a/test/DotRecast.Recast.Test/RecastTileMeshTest.cs
+++ b/test/DotRecast.Recast.Test/RecastTileMeshTest.cs
@@ -137,7 +137,7 @@ public class RecastTileMeshTest
     private void Build(IInputGeomProvider geom, RcBuilder builder, RcConfig cfg, int threads, bool validate)
     {
         CancellationTokenSource cts = new CancellationTokenSource();
-        List<RcBuilderResult> tiles = builder.BuildTiles(geom, cfg, threads, Task.Factory, cts.Token);
+        List<RcBuilderResult> tiles = builder.BuildTiles(geom, cfg, false, true, threads, Task.Factory, cts.Token);
         if (validate)
         {
             RcBuilderResult rcResult = GetTile(tiles, 7, 8);