I think the problem is only when the PokerStars tables are minimized...The message says:
************** Texto de la excepción **************
ai+b: Error cropping checkbox
en ai.a(IntPtr A_0, b0 A_1, Boolean A_2, String A_3)
en af.e()
en am.ce(Object A_0, EventArgs A_1)
en System.Windows.Forms.Timer.OnTick(EventArgs e)
en System.Windows.Forms.Timer.TimerNativeWindow.WndPr oc(Message& m)
en System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)