Automatic rollover crushes NT immediately

[fx.practic]

Hello. When I try to rollover futures contract usung Database master, I got unhandled exception null refernce error.

I tried 20 times in a row. x86 and x64
With established connection to data provider and without it.
With new empty workspace.
After Windows restart.

Win 10 64 bit

Trace file attached.

HELP!!!

[NinjaTrader_ShawnB]

Hello fx.practic,


Thank you for your post.


We advise that you rename your database to troubleshoot this item using the following steps :

• Shutdown NinjaTrader and Go to the Start Menu
• Select My Documents--> NinjaTrader 8--> DB--> NinjaTrader.SDF.
• 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

To prevent running into situations where you can potentially lose important data, we advise running regular backups via our inbuilt backup feature in NinjaTrader - http://ninjatrader.com/support/helpG...up_archive.htm


Please let us know if you continue to see the same behavior.

[fx.practic]

I removed all user-created instruments an instruments lists. And it helps.
Thank You.