NinjaTrader8 abruptly exits on startup after "Initializing Database..."

[rajneesh.sehgal]

Hi,
NinjaTrader 8 was working fine until yesterday and today it just exited on startup after "Initializing Database" on the startup screen. Looking at the logs I see the following unhandled exception:

2022-01-17 12:58:01:403|2|4|Session Break (Version 8.0.23.0)
2022-01-17 12:58:02:908|1|4|Verifying license at primary server...
2022-01-17 12:58:03:170|1|4|Type=Simulation State=Verified Start Date=12/31/2004 End Date=11/30/2099
2022-01-17 12:58:04:783|1|4|Global simulation mode enabled
2022-01-17 12:58:05:514|1|4|Vendor assembly 'NinjaTrader.Core' version='8.0.23.0' loaded.
2022-01-17 12:58:05:515|1|4|Vendor assembly 'NinjaTrader.Gui' version='8.0.23.0' loaded.
2022-01-17 12:58:07:476|1|2|Using IS (is-us-nt-001.ninjatrader.com/31658)
2022-01-17 12:58:07:494|1|4|Automated trading disabled
2022-01-17 12:58:07:862|1|32|Order entry hot keys disabled
2022-01-17 12:58:07:863|1|4|Auto close enabled=False
2022-01-17 12:58:07:889|0|4|Unhandled exception: The component 'NinjaTrader.Gui.ControlCenter' does not have a resource identified by the URI '/NinjaTrader.Gui;component/controlcenter/controlcenter.xaml'.

Can someone help me get past this?

Thanks

[NinjaTrader_ChristopherJ]

Hello rajneesh.sehgal,

I see that you're using an older version of NinjaTrader 8. To update NinjaTrader, please follow the steps below:

• Click on the link: https://ninjatrader.com/PlatformDirect
• Enter your license key and press Submit
• Select 'Download'
• Critical: Before running the installer, ensure NinjaTrader is closed.

If the error persists please rename your database with the steps below.

• Go to My Documents--> NinjaTrader 8--> db--> "NinjaTrader.sdf" file (may only say 'NinjaTrader' depending on your Windows File Explorer settings)
• Right click on NinjaTrader.sdf and select "Rename"
• *Name it "OLDNinjaTrader.sdf"
• Then restart the software and NinjaTrader will create a fresh database file to use
• Unfortunately the following items stored in the old database will be lost - Trading Hours templates, Instrument Lists / Custom Instruments, historical trade execution data, saved Strategy Analyzer backtest results

[rajneesh.sehgal]

Thanks Christopher. I uninstall NinjaTrader, deleted the folders and then reinstalled it.

Now when I launch it I see the splash screen and then it abruptly exists after "Verifying License...". I don't have a license, I am using the free edition. There is nothing available in the logs too.

Can you please assist?

Thanks.

[rajneesh.sehgal]

I deleted the SDF file and then it started working

[deetee]

Hi Christopher,

I have the same error message on startup. I tried your steps a few times, but didn't work for me.

Could you please help out?

Thanks
Dennis

This is the log:
2022-01-30 16:54:57:701|2|4|Session Break (Version 8.0.25.0)
2022-01-30 16:54:58:927|1|4|Verifying license at primary server...
2022-01-30 16:54:59:091|1|4|Type=Simulation State=Verified Start Date=1-1-2005 End Date=1-12-2099
2022-01-30 16:55:02:622|1|4|Global simulation mode enabled
2022-01-30 16:55:02:833|1|4|Vendor assembly 'ConvergentNT8V3' version='3.0.0.1' loaded.
2022-01-30 16:55:03:668|1|2|Using IS (is-us-nt-001.ninjatrader.com/31658)
2022-01-30 16:55:03:676|1|4|Automated trading disabled
2022-01-30 16:55:03:682|1|4|Auto connecting 'My Interactive Brokers'...
2022-01-30 16:55:03:693|1|2|My Interactive Brokers: Primary connection=Connecting, Price feed=Connecting
2022-01-30 16:55:03:749|0|4|Unhandled exception: Exception has been thrown by the target of an invocation.
2022-01-30 16:55:05:886|0|2|My Interactive Brokers: Unable to connect to IB TraderWorkstation instance. Please check that TWS is running and that it is configured properly to accept API clients. (Logon failed)
2022-01-30 16:55:05:886|1|2|My Interactive Brokers: Primary connection=Disconnected, Price feed=Disconnected
2022-01-30 16:55:05:888|1|4|Auto connecting 'My Kinetick'...

Hello rajneesh.sehgal,

...

If the error persists please rename your database with the steps below.

• Go to My Documents--> NinjaTrader 8--> db--> "NinjaTrader.sdf" file (may only say 'NinjaTrader' depending on your Windows File Explorer settings)
• Right click on NinjaTrader.sdf and select "Rename"
• *Name it "OLDNinjaTrader.sdf"
• Then restart the software and NinjaTrader will create a fresh database file to use
• Unfortunately the following items stored in the old database will be lost - Trading Hours templates, Instrument Lists / Custom Instruments, historical trade execution data, saved Strategy Analyzer backtest results

[NinjaTrader_RyanS]

Hello,

Please write into platformsupport[at]ninjatrader[dot]com so we may look further into why this error is occurring on your system.