iOS Question Problem with xCustomListView

Private Sub Application_Start (Nav As NavigationController)
    'SetDebugAutoFlushLogs(True) 'Uncomment if program crashes before all logs are printed.
    NavControl = Nav
    Page1.Initialize("Page1")
    Page1.Title = "Page 1"
    Page1.RootPanel.Color = Colors.White
    Page1.RootPanel.LoadLayout("1")
    NavControl.ShowPage(Page1)
End Sub

Application_Start
Error occurred on line: 28 (Main)
Object was not initialized (NSObject)
Stack Trace: (
  CoreFoundation       <redacted> + 150
  libobjc.A.dylib      objc_exception_throw + 38
  CoreFoundation       <redacted> + 0
  B4i Example          -[B4IObjectWrapper object] + 200
  B4i Example          -[B4INativeObject RunMethod::] + 84
  B4i Example          -[b4i_customlistview _initialize:::] + 1096
  CoreFoundation       <redacted> + 68
  CoreFoundation       <redacted> + 292
  B4i Example          +[B4I runDynamicMethod:method:throwErrorIfMissing:args:] + 1784
  B4i Example          -[B4IShell runVoidMethod] + 210
 B4i Example          -[B4IShell raiseEventImpl:method:args::] + 2042
 B4i Example          -[B4IShellBI raiseEvent:event:params:] + 1328
 B4i Example          -[B4ICustomViewWrapper AfterDesignerScript] + 2030
 B4i Example          -[B4ILayoutBuilder loadLayout:::] + 3268
 B4i Example          -[B4IPanelWrapper LoadLayout::] + 150
 B4i Example          -[b4i_main _application_start:] + 1326
 CoreFoundation       <redacted> + 68
 CoreFoundation       <redacted> + 292
 B4i Example          +[B4I runDynamicMethod:method:throwErrorIfMissing:args:] + 1784
 B4i Example          -[B4IShell runMethod:] + 588
 B4i Example          -[B4IShell raiseEventImpl:method:args::] + 2192
 B4i Example          -[B4IShellBI raiseEvent:event:params:] + 1328
 B4i Example          __33-[B4I raiseUIEvent:event:params:]_block_invoke + 74
 libdispatch.dylib    <redacted> + 10
 libdispatch.dylib    <redacted> + 22
 libdispatch.dylib    <redacted> + 1524
 CoreFoundation       <redacted> + 8
 CoreFoundation       <redacted> + 1574
 CoreFoundation       CFRunLoopRunSpecific + 520
 CoreFoundation       CFRunLoopRunInMode + 108
 GraphicsServices     GSEventRunModal + 160
 UIKit                UIApplicationMain + 144
 B4i Example          main + 106
 libdyld.dylib        <redacted> + 2
)
Application_Active