>  Error al inciar

Fail at startup (my english is so bad, sorry :C) 


The Error
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Polarity has run into an exception at:
System.NullReferenceException: Referencia a objeto no establecida como instancia de un objeto.
en Polarity.Welcome.Form3_Load(Object sender, EventArgs e)
en System.Windows.Forms.Form.OnLoad(EventArgs e)
en System.Windows.Forms.Form.OnCreateControl()
en System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
en System.Windows.Forms.Control.CreateControl()
en System.Windows.Forms.Control.WmShowWindow(Message& m)
en System.Windows.Forms.Control.WndProc(Message& m)
en System.Windows.Forms.ScrollableControl.WndProc(Message& m)
en System.Windows.Forms.ContainerControl.WndProc(Message& m)
en System.Windows.Forms.Form.WmShowWindow(Message& m)
en System.Windows.Forms.Form.WndProc(Message& m)
en System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
en System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
en System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
Would you like to restart?
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Its a windows 8.1
plz help me with this error or solve the bug