Associated Plataforms lost on 8.3 beta 2

[Former user]

My custom emulators has lost the associated plataforms. I lost a lot of time creating a parallel version o Retroarch and it`s gone.

Object reference not set to an instance of an object.

App: LaunchBox Version: 8.3-beta-2 Type: System.NullReferenceException Site: Void (Unbroken.LaunchBox.Desktop.Forms.EmulatorForm) Source: LaunchBox

at (EmulatorForm ) at Unbroken.LaunchBox.Desktop.Forms.EmulatorForm.AddCoresFromApplicationStartupPath() at (EmulatorForm , Object , EventArgs ) at Unbroken.LaunchBox.Desktop.Forms.EmulatorForm.field_Changed(Object sender, EventArgs e) at System.Windows.Forms.Control.OnTextChanged(EventArgs e) at System.Windows.Forms.Control.set_Text(String value) at System.Windows.Forms.TextBoxBase.set_Text(String value) at System.Windows.Forms.TextBox.set_Text(String value) at (EmulatorForm ) at Unbroken.LaunchBox.Desktop.Forms.EmulatorForm.LoadValues() at Unbroken.LaunchBox.Desktop.Forms.EmulatorForm.EmulatorForm_Load(Object sender, EventArgs e) at System.Windows.Forms.Form.OnLoad(EventArgs e) at System.Windows.Forms.Form.OnCreateControl() at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl() at System.Windows.Forms.Control.WmShowWindow(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Form.WmShowWindow(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Recent Log:

3:19:42 AM Music.Pause Start 3:20:17 AM Exception