Ninjatrader 8 shuts down right after logo appears.

[Wartrace]

I have a problem. When I start Ninjatrader 8 the NT logo apears and then it shuts down ninjatrader. I added an indicator yesterday and it worked fine after I added it but after I shut it down this started happening. It looks like this is the problem "Could not load file or assembly 'Microsoft.CodeAnalysis"

[NinjaTrader_Erick]

Hello Wartrace,

Thank you for reaching out.

To resolve this, first I recommend a repair to your NinjaTrader 8 platform to try fixing this error. To complete a repair, do the following:

• Shut down NinjaTrader 8
• Go to your computer's Control Panel > Programs & Features (Note: search for 'Control Panel' to find it within the Windows Start Menu. This will be a different window than the Settings page)
• Left-click once on NinjaTrader 8 > select 'Repair' above the list of available programs
• Restart the platform after it finishes repairing, and test for this behavior again.
• Here is a video I made for your reference: https://www.screencast.com/t/5RH7MjuaQiG

Try to launch the platform again, and if it still crashes:

Next please try testing your platform in Safe Mode to verify if this behavior is being caused by a 3rd-party add-on using the steps below.

Safe Mode will prevent NinjaTrader from:

• Loading workspaces and connecting on start-up.
• Loading custom assemblies (i.e. 3rd-party add-ons and NinjaScripts)
• Getting instrument updates from the server

To enable Safe Mode, you can use the following steps:

• Shut down NinjaTrader.
• Click on the Windows Start Button
• Search for and Launch NinjaTrader (Safe Mode)

Once you have opened the platform in Safe Mode:

• Reconnect to your Data Provider
• Please open a new chart with no custom bar types/indicators/templates and test for issues.

Does the behavior persist on this blank Workspace in Safe Mode?

• If not, please try opening your previous workspace by going to the Control Center > Workspaces drop-down. It may already show as being open. Hit 'close' and do not save and then re-open it again for your windows to re-appear. You will notice that no 3rd-party add-ons are running in Safe Mode.

Does the behavior return on your regular Workspace in Safe Mode?

• If not, restart NinjaTrader, and test for the behavior on your Workspace normally once more with your 3rd-party add-ons available. If this reintroduces issues, I suggest rebuilding your workspace, adding 1 add-on at a time.
• Please keep track of what add-ons you add back in to identify the cause of the behavior if it returns.

If it does not return, it indicates the error was isolated only to your other Workspace. I also suggest making a backup of your workspace so we can restore a working version of it if the issue returns. You will want to keep this backup file on an external hard drive or uploaded to a cloud drive such as Google Drive, Dropbox, or OneDrive.

To create a backup, go to the Control Center > Tools > Export > Backup File. Additional information about backups may be read in our Help Guide linked below.

• NinjaTrader 8 Help Guide — Backup and Restore

Please let me know the results of this test. I look forward to your response.

[backtester831]

I have a problem. When I start Ninjatrader 8 the NT logo apears and then it shuts down ninjatrader. I added an indicator yesterday and it worked fine after I added it but after I shut it down this started happening. It looks like this is the problem "Could not load file or assembly 'Microsoft.CodeAnalysis"

Try to delete the UI file in the NinjaTrader folder, this usually fixes it when I get that same problem.

[Wartrace]

I ended up removing the workspace from the Ninjatrader file and the problem no longer occurs. I have a pretty simple set of indicators/tools so it isn't a burden to set up a new space.