Visual Basic Error message

[Shalim]

Unknown Error: Microsoft.VisualBasic
at Microsoft.VisualBasic.Strings.Format(Object Expression, String Style)
at WindowsApplication7.Form1.ThreeNonZeroDigits(Double value)
at WindowsApplication7.Form1.Numeric2Bytes(Double b)
at WindowsApplication7.Form1.DownloadExtras()
at WindowsApplication7.Form1.DoUpdates()
at WindowsApplication7.Form1.Timer3_Tick(Object sender, EventArgs e)
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.Callback(IntPtr hWnd, Int32 msg, IntPtr idEvent, IntPtr dwTime)External component has thrown an exception.

anyone?