[RESOLVED] Storing Custom Classes in My.Settings

[arcanine]

According to this and this it should be possible to create custom classes and store them in My.Settings.

I tried doing what those articles recommended, but I can't get the most basic custom class to work:

Imports System.ComponentModel
Imports System.Configuration
 
<Serializable()> _
Public Class CustomSetting
    Inherits ApplicationSettingsBase
 
    Public Sub New()
 
    End Sub
 
    Public Sub New(ByVal mysetting As String)
        _MySetting = mysetting
    End Sub
 
    Private _MySetting As String
    <UserScopedSetting()> _
    <SettingsSerializeAs(SettingsSerializeAs.Xml)> _
    Public Property MySetting As String
        Get
            Return _MySetting
        End Get
        Set(value As String)
            _MySetting = value
        End Set
    End Property
End Class

When I run the program, I get the following error:

{"Configuration system failed to initialize"}

I don't know what I'm doing wrong.