HY-8 Error and disappearing flow rates HY-8 Error and disappearing flow rates toddvb (Civil/Environmental) (OP) 28 Aug 15 20:11 HY-8 keeps losing my flow rates. At the top of the window, after the file path, it shows [Error]. I enter my flow rates using the recurrence interval option. All other data is not effected. Anyone had this problem?