EventSetTimer internal error (4024)

[Michael Nestler]

Hi,

I have an indicator on multiple open charts in MT4. The indicator fails sometimes on reinitialization after a symbol change, but only on the weekly chart for this symbol. This is very repeatable. The other timeframes/charts are fine. This happens always during OnInit() when EventSetTimer(1) is called. The error is an internal error (4024) and it happens again and again should I retry any number of times (tried up to 15). I am calling EventKillTimer() in OnDeinit().

Is this a known issue or is there any way to work around the problem?

Thanks

[Michael Nestler]

I solved it by moving the EventSetTimer() call to OnCalculate() and retry every time OnCalculate() is called until successful. 

[William Roeder]

All the time. Been broken for several years.

1. Try to start the timer in OnCalculate/OnTick, as EventSetTimer sometimes fails on MT4, with ERR_INTERNAL_ERROR (4024), or ERR_CHART_NOREPLY (4030) and ERR_INVALID_FUNCTION_PARAMVALUE (4051) This is especially noticeable on terminal startup due to paging delays.
   
2. Indicators generally shouldn't need it. MTF do when the initial HTF isn't yet downloaded/updated.
3. I simply, use a singleton (gsTicker) and only enable it when necessary. See attached

[Michael Nestler]

Thank you!