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Heap corrupt in NT 7
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Heap corrupt in NT 7

  #1 (permalink)
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Omer עומר / Israel י
 
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Heap corrupt in NT 7

I'm struggling with a heap corruption in N 7.0
This only seems to happen in the night time and happens when an order is created through ATI.
A pop-up window appears, this application (N 7.0) has stopped working

Anybody any clue ?

Faulting application name: NinjaTrader.exe, version: 7.0.1000.31, time stamp: 0x56b21a0c
Faulting module name: ntdll.dll, version: 10.0.10586.306, time stamp: 0x571af2eb
Exception code: 0xc0000374
Fault offset: 0x00000000000ee6fc
Faulting process ID: 0x2cb90
Faulting application start time: 0x01d1bafdaf1bd7f3
Faulting application path: C:\Program Files (x86)\NinjaTrader 7\bin64\NinjaTrader.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report ID: 8116503f-1088-4411-a419-ef31b8421f2b
Faulting package full name:
Faulting package-relative application ID:

I will try to run NT without any workspaces open and do the same test and try to see if the problem persists or goes away.

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  #2 (permalink)
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Support

Support advices a re-install :

Quoting 
If the operating system is seeing the path to ntdll.dll as faulty it would be a good idea to correct that with a repair of the installation. Please follow the instructions below.
Close all running applications.
Uninstall NinjaTrader within Windows Control Panel.
Go to Documents\NinjaTrader 7\ > rename the 'Config.xml file to 'Prev.Config.xml'
Then you will need to clear your internet browser cache and history. You will clear this from within your internet browser (with IE, Tools-->Options, delete cookies and files, clear history).
Reboot your machine.
Once these steps are completed, download NT7 from the link below.
NinjaTrader Direct Download
Install NinjaTrader 7 and then start up NinjaTrader. It will start up without your configuration, this is intended to ensure all paths are correct in the installation.
Once NinjaTrader is fully started, shut it down. Then go to Documents\NinjaTrader 7\ > delete 'Config.xml' > rename 'Prev.Config.xml' to 'Config.xml'.
Start NinjaTrader.
Test the same scenarios you have previously with the AT interface submitting the orders. Let me know if the message is seen again and send over the Log and Trace with the message if it does occur after following the instructions above.


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  #3 (permalink)
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Unfortunately the problem stays the same :

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Painful to have my platform crashing when I fire a few orders to the market...

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  #4 (permalink)
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rleplae View Post
Unfortunately the problem stays the same :

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Painful to have my platform crashing when I fire a few orders to the market...

Have you checked that there is no corruption in NTDLL in the syswow64 and/or system32?

I have fixed other apps by replacing this. Registry issues can also cause the problem but first I would CRC check the NTDLLs against identical versions (will be found in CAB files on a Windows search). Even failed virus attack could damage them.

SFC /scannow might help (probably won't) but its easy to run. One with a confirmed virus infection sfc /scannow failed to detect a problem but on manual replace of NTDLL it fixed the issue. Seems the infection had a few tricks up its sleeve.

Another time NT 7 was crashing faulting NTDLL I uninstalled & reinstalled (as per NT support's advice), painful and no use. I then uninstalled using Revo to really clean the system and it was ok on re-install.

I am not a coder but I have supervised industrial scale application repackaging for Win 7 corporate rollouts etc.

Nearly forgot.. SFC /scanfile <path> can be quicker as its specific (instead of scannow) ..

https://msdn.microsoft.com/en-us/library/windows/desktop/aa382541(v=vs.85).aspx

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  #5 (permalink)
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Rory View Post
Have you checked that there is no corruption in NTDLL in the syswow64 and/or system32?

I did a complete fresh re-install of NT.

The problem is sometimes/(not always!) happening when creating new orders.
The problem only happens when generating orders.

No charts are open/loaded, no indicators running.
I suspect an issue in the core.

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  #6 (permalink)
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rleplae View Post
I did a complete fresh re-install of NT.

The problem is sometimes/(not always!) happening when creating new orders.
The problem only happens when generating orders.

No charts are open/loaded, no indicators running.
I suspect an issue in the core.

Indeed, I knew I was writing a "teaching grandma to suck eggs" post with a developer haha.

I recall something similar of a report with on order crashes when my dev was creating a unmanaged order based strat. However I guess you can trace it.
@rleplae I remembered something.. We had a VMware dev environment and there was an error relating to NTs dependence on IE and a network problem. These might give an idea.

http://ninjatrader.com/support/forum/showthread.php?t=49164
http://www.tomshardware.com/answers/id-2152651/ntdll-dll-error-diagnosis.html


Last edited by Rory; June 1st, 2016 at 07:12 PM.
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  #7 (permalink)
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Rory View Post
Indeed, I knew I was writing a "teaching grandma to suck eggs" post with a developer haha.

I recall something similar of a report with on order crashes when my dev was creating a unmanaged order based strat. However I guess you can trace it.
@rleplae I remembered something.. We had a VMware dev environment and there was an error relating to NTs dependence on IE and a network problem. These might give an idea.

how to connect without ie - NinjaTrader Support Forum
ntdll.dll error diagnosis [Solved] - Explorer - Windows 7

Nothng to do with all of that.
It's a bug in the ATI interface, i'm able to reproduce it very easily.

One can also see the handles growing through the roof

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  #8 (permalink)
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rleplae View Post
Nothng to do with all of that.
It's a bug in the ATI interface, i'm able to reproduce it very easily.

One can also see the handles growing through the roof

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Interesting and useful to know.

You have NT execute trades (if I recall ATI is inbound?) Does that work for you? Kind of assumed it was just signal generating. We tried it but found NT was not stable over days and weeks.

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  #9 (permalink)
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Rory View Post
Interesting and useful to know.

You have NT execute trades (if I recall ATI is inbound?) Does that work for you? Kind of assumed it was just signal generating. We tried it but found NT was not stable over days and weeks.

The ATI interface is awfully leaky.
Initially I ran into the same problem as you mentioned with stability.

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@rleplae, you should try to write you own ATI: a strategy listening to a socket port and executing the order with "normal" NinjaScript functions.
Not perfect on an intellectual point of view but not very difficult.

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