[06/07/2013 22:41:18] Input string was not in a correct format.
   at System.Number.ParseDouble(String value, NumberStyles options, NumberFormatInfo numfmt)
   at System.String.System.IConvertible.ToDouble(IFormatProvider provider)
   at System.Convert.ToDouble(Object value)
   at WLKReaderWriter.MainForm.ConvertRecordsTabToMetric()
   at WLKReaderWriter.MainForm.RecordsBox_SelectedIndexChanged(Object sender, EventArgs e)
   at System.Windows.Forms.ListBox.OnSelectedIndexChanged(EventArgs e)
   at System.Windows.Forms.ListBox.set_SelectedIndex(Int32 value)
   at WLKReaderWriter.MainForm.RefreshSummaryFields()
   at WLKReaderWriter.MainForm.InsertRecord_Click(Object sender, EventArgs e)