B4J Question java.io.FileNotFoundException

#Region Project Attributes
    #MainFormWidth: 500
    #MainFormHeight: 300
#End Region

Sub Process_Globals
    Private fx As JFX
    Private MainForm As Form
    Public lv1 , lv2 As ListView
    Private SplitPane1 As SplitPane
    Private SplitPaneAnchorL As AnchorPane
    Private SplitPaneAnchorR As AnchorPane
End Sub

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    MainForm.RootPane.LoadLayout("ListViewLayout")    '------------- ListViewLayout.FXML !
    MainForm.Title="Split Pane - Accessing nodes?"
    MainForm.Show
    '
    lv1.Items.Initialize
    lv1.Items.Add("First entry")
    ' lv2 lives inside a split pane.
    ' ** ERROR - object should be initialised first
    ''lv2.Items.Initialize
    ''lv2.Items.Add("First entry")  
End Sub

Program started.
main._appstart (java line: 55)
java.io.FileNotFoundException: ListViewLayout.bjl
at anywheresoftware.b4a.objects.streams.File.OpenInput(File.java:206)
at anywheresoftware.b4j.objects.LayoutBuilder.loadLayout(LayoutBuilder.java:44)
at anywheresoftware.b4j.objects.PaneWrapper.LoadLayout(PaneWrapper.java:81)
at b4j.example.main._appstart(main.java:55)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:93)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:84)
at b4j.example.main.start(main.java:36)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)

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