Android Question Error loading SwitchView

#Region Module Attributes
#FullScreen: False
#IncludeTitle: True
#ApplicationLabel: My Sound Settings
#VersionCode: 1
#VersionName:
#SupportedOrientations: Portrait
#CanInstallToExternalStorage: False
#End Region

'Activity module
Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.

End Sub

Sub Globals

    Dim swMasterVolume As SwitchView
    Dim panelMain As Panel
    Dim etMyText As EditText
End Sub

Sub Activity_Create(FirstTime As Boolean)

    Activity.LoadLayout("Main")

    etMyText.Initialize("TextBox")
    etMyText.Text = "Hello"

    panelMain.AddView(etMyText, 0dip, 0dip, 100dip, 50dip)

    swMasterVolume.Initialize(Me, "swMasterVolume")

    'panelMain.AddView(swMasterVolume.Switch, 10dip, 100dip, 200dip, 50dip)

    If StateManager.RestoreState(Activity, "Main", 60) = False Then
    EndIf
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

    StateManager.SaveState(Activity, "Main")
    StateManager.SaveSettings
End Sub

Sub Button1_Click

    Activity.Finish
End Sub