Market Replay in 8.0.2.0 broken

[traderpards]

Steps to reproduce:
1) Launch Ninjatrader
2) Download GC 12-16 data from November 6th to today
3) Connect to Playback
4) Bring up a chart with nothing on it.
5) Set Playback to November 8th.
6) Run Playback

The market replay runs but the data on the chart doesn't move - the chart remains exactly where it's at. You essentially get nothing happening. It's a lot faster! The jumps are like six hours but that doesn't work for me when it isn't talking to the data. I went back to 8.0.1.0 and it works fine on the very same data. (so it isn't corrupt data) I also tried a different instrument and that didn't work either. The Market Replay is broken.

[NinjaTrader_ChelseaB]

Hello traderpards,

I have created a video taking the steps you have outlined but I am not able to reproduce the behavior.

http://www.screencast.com/t/fXHyvIE2YZdF

May I have a screenshot showing your historical data manager with the market replay data you are trying to playback, the playback controller itself so i may see the time and date, and the chart?

To send a screenshot with Windows 7 or newer I would recommend using Window's Snipping Tool.

Click here for instructions

Alternatively to send a screenshot press Alt + PRINT SCREEN to take a screen shot of the selected window. Then go to Start--> Accessories--> Paint, and press CTRL + V to paste the image. Lastly, save as a jpeg file and send the file as an attachment.

Click here for detailed instruction

[traderpards]

Thanks for making that video Chelsea. I had to ask my 12-year old to hook me up with his video stuff so I could make you one because using screen shots wouldn't work with this. Sorry - it's almost 6 MB zipped but this is my first video I've ever made and I don't know how to take advantage of free stuff on some web site that would offer it.

So I went back to 8.0.1.0 like I said and I was working happily along using market replay debugging my code (in Visual Studio) for hours and hours and all of a sudden 8.0.1.0 did the same thing to me that I described in my original post. After that, I couldn't get the replay to work at all - it wouldn't even run. So I did a clean install of 8.0.2.0 and downloaded GC only, going back to October 23rd thinking I needed to pad the time before Nov 8th in case the chart wanted it. (Turns out I didn't need to do that but I didn't know that.) So I have a clean install, plus the market replay data, plus my strategies, indicators and bar types and the market replay won't replay for me.

So, you're probably asking what happened when I first tried it for the very first time after I downloaded the data with a nice, fresh platform. It did work - it started playing. Then I tried to add my strategy to it and that's when the market replay froze, like in the video. So I disconnected the playback connection and restarted it and that's when it began not playing at all, with or without a strategy. I can't even get the EMA crossover strategy that comes with to play. So I got rid of the data and downloaded those three days only to see if it would play then and it doesn't. The chart loads the data but clicking Play on Market Replay merely toggles the button between Play and Pause and the chart remains still.

So that's where I am, with a broken market replay that doesn't work for me and that I need to debug my base class.

I would have attached the ZIP file but I got slammed probably because it's too big. So I'll put in in my drop box and send you the link via email.

[sledge]

Steps to reproduce:
1) Launch Ninjatrader
2) Download GC 12-16 data from November 6th to today
3) Connect to Playback
4) Bring up a chart with nothing on it.
5) Set Playback to November 8th.
6) Run Playback
.

Does a restart help? (I see you did some uninstall/reinstall)...

There might be an issue with downloading data and connecting to playback where it doesn't recognize this newly downloaded data.

[traderpards]

Thanks Koganam but it did work at first, when I first downloaded the data. Then it didn't. Plus, it did this to me in version 8.0.1.0 after working just fine for probably five or six hours. Sometimes restarting NT works but this time it didn't in either version.

[NinjaTrader_PatrickG]

Please write in to PlatformSupport[AT]NinjaTrader[DOT]com with a brief description of what you're experiencing and a link to this forum thread so we can assist you further.

[traderpards]

I did already. {1620279} I also described it fully in this thread.

[JellySkater]

Market Replay bug

Is there a fix for the problem? re traderpards I have the same issue. For me the problem comes and goes. Sometime restarting the program clears it up.

Is there a limit to how far back one can go; for example, six months, 12 months.?

Is the number of indicators on the chart an issue?

I want tick data; but it seams to be more problematic. Get short periods of minute data to work. That fails if use togo or restart a couple times.

I really need this to work so as to learn the platform and get templates and setups inplace.

Thank You,

PS my ticket number is 1621810

[NinjaTrader_ChelseaB]

Hello JellySkater,

Is the behavior you are experiencing possible to reproduce without any custom scripts running on any charts in any open workspaces (there can be multiple open workspaces)?

[sledge]

Is there a fix for the problem? re traderpards I have the same issue. For me the problem comes and goes. Sometime restarting the program clears it up.

Is there a limit to how far back one can go; for example, six months, 12 months.?

I have been replaying 3 years of ES data now without leaks or crashing or NT exceptions.

It sounds like you have some bad code that needs fixed. Please do as Chelsea recommends and remove custom code and find the bug.

[traderpards]

Hello JellySkater,

Is the behavior you are experiencing possible to reproduce without any custom scripts running on any charts in any open workspaces (there can be multiple open workspaces)?

In other words, do you have a script that runs perfectly in a live environment but chokes for no apparent reason in the market replay when all you're doing is trying to start it over at a specific point?

Seriously, the last I heard from Patrick H. was Friday, when he ran my script and said it ran just fine. Then I asked him if he ran it, saw a problem, stopped it, fixed the problem in the script, rebuilt the script, reloaded the script on the chart and reset the MR to a point that reproduced the problem so he could see if his code fix worked, and then tried to re-run it? (Because that's how you get it to hang up.) He said he didn't do any of that but would this past Saturday. This was a holiday weekend so I didn't want to be a jerk about bugging him about it. After going back and forth with Chelsea, I'm just happy he finally ran it in the first place. Besides, he said he'd run it and I believe him. It's fine if he didn't get to it on Saturday.

I don't care how bad your code is, if it runs in a live environment, it should run in a simulated environment. Telling me, "Your script doesn't run in Market Replay because it sucks", or something to that effect is a flat-out cop-out. Besides, how are you supposed to tell your script has problems if the only feedback you have is it hangs up the market replay but runs just fine in a live environment?

Note: I haven't run MR using Tick Replay so I'm not sure about that.

[NinjaTrader_ChelseaB]

Hello traderpards,

Our intention is to take steps to identify the source of the issue and either report and an issue with Market Replay because this can be reproduced without a script, or identify the code in the script that is causing the issue.

Currently, I have nothing to report.
Can you demonstrate the issue without a script?
Please provide a video of this so I may send this to development.

Can you provide an extremely short snippet of code that can consistently reproduce the issue?
Please provide an export of the simplified script so that I may send this to development.,

I am not able to report an issue I cannot reproduce.
I cannot submit a script that contains code that is not absolutely necessary to reproduce the behavior. (It must be completely simplified)

How would you like to proceed?

Are you still working with Patrick as you are able to reproduce the behavior on your end?

[traderpards]

I can run the Market Replay without a script. Yahoo!! (Except, I'm not sure how valuable being able to do that is.) My issue is now in Patrick's hands... But thanks though!

But just so you know, sometimes people run something a little more complicated than the example SMA moving average cross. Just because the Market Replay doesn't hang up running that, or "something simplified" doesn't mean the MR gets a clean bill of health. And I'm not sure how I'm supposed to identify the part of my script, assuming there is a part of my script, that hangs up the market replay when I can't even run the market replay!!

[sledge]

I couldn't reproduce.

[JellySkater]

Trail runs of MR

Started NT8.64 and opened a new workspace and closed old workspaces. Opened new chart for ES 30-17 set for 1600 tick with 10 days of back days; no other changes. Connected to Playback and accepted the default date range; pressed play and increased speed. Chart updated as expected. Stopped replay; moved playback slider, and used the GOTO function. Chart plays ed as expected.

Added two EMAs and two SMAs and the MACD indicator. Started replay and it appeared to work correctly.

Then added a custom indicator, my labed SMIAMB. It is Anne Marie Baiynd setting for Stockastic Momentum Indicator; attached.

Initial replay worked; but after changing date range along with restarts; replay failed. Disconnected Playback and Reconnected. MR then loaded all price data into one bar per day. Shutdown software and started again, Replay failed to work. Started new workspace, new 1600tick chart without any indicators. Replay still put all data into one bar per day. 1600tick of ES is about 3-4 mins per bar.

++++++++++++++

BTW- Minutes charts with the SMIAMB indicator appear to be working today. Minute charts have failed at other sessions. I have observed this problem since November. I'm off and on due to just training and when there is problem, I stopped for a while. Upon restarting, sometimes MR would work for a while; but after several manipulations, it would fail. I'm guessing there are occasional software updates that are correcting something. Hence the change in behavior.

++++
Tried to reload software: re-used the NT8 Installer.; It says I have a newer version, Help/About reports 8.01. Per some messages on this broad, 8.02 is out. How do I make sure I'm current?

I would be glad to have someone watch this problem. Don't know how to create video.


Hope this helps,