Unity3D will not load a VisualGestureBuilderDatabase file.

I have created a Visual Gesture Builder database file TestGestures4.gdb and put it in my Assets folder, in a subfolder named StreamingAssets.

I have code to load this database into my game:

            _gestureDatabase = VisualGestureBuilderDatabase.Create(Application.streamingAssetsPath + @"/" + GestureDatabaseFile);

However, when I run my game, and step through the debugger to this point:

namespace Microsoft.Kinect.VisualGestureBuilder
{
    public sealed partial class VisualGestureBuilderDatabase
    {
        [RootSystem.Runtime.InteropServices.DllImport(
            "KinectVisualGestureBuilderUnityAddin",
            EntryPoint = "Microsoft_Kinect_VisualGestureBuilder_VisualGestureBuilderDatabase_ctor",
            CallingConvention = RootSystem.Runtime.InteropServices.CallingConvention.Cdecl)]
        private static extern RootSystem.IntPtr Microsoft_Kinect_VisualGestureBuilder_VisualGestureBuilderDatabase_ctor([MarshalAs(UnmanagedType.LPWStr)]string path);
        public static VisualGestureBuilderDatabase Create(string path)
        {
            RootSystem.IntPtr objectPointer = Microsoft_Kinect_VisualGestureBuilder_VisualGestureBuilderDatabase_ctor(path);
            Helper.ExceptionHelper.CheckLastError();
            if (objectPointer == RootSystem.IntPtr.Zero)
            {
                return null;
            }

            return Helper.NativeObjectCache.CreateOrGetObject<Microsoft.Kinect.VisualGestureBuilder.VisualGestureBuilderDatabase>(
                objectPointer, n => new Microsoft.Kinect.VisualGestureBuilder.VisualGestureBuilderDatabase(n));
        }
    }

I am always returned a NULL pointer.

Here is what the debugger shows as the path my TestGestures4.gdb file is located:

What am I doing wrong here?

Solved it. I spelt the name of my visual gesture builder database file wrong:

I put “TestGestures4.gdb”.

It should be:

TestGestures4.gbd