OrderFlowBot 3.0 not working on NinjaTrader 8.1.6.0 — LockRecursionException + NullReference in OnBarUpdate

[bbasu2011-cell]

Hi there, I’m running into a compatibility issue with OrderFlowBot 3.0 on NinjaTrader 8.1.6.0. The strategy installs fine and appears in the Strategies menu, but it doesn’t execute trades. I’m seeing the following errors:

• System.Threading.LockRecursionException: Recursive read lock acquisitions not allowed in this mode

• Error on calling 'OnBarUpdate': Object reference not set to an instance of an object

Setup:

NinjaTrader 8.1.6.0

OrderFlowBot 3.0

Strategy added to bin/Custom/AddOn/OrderFlowBot

Strategy appears and enables in NT

Instrument is running, but no trades are executed

I suspect NT 8.1.6.0 changed threading/event handling rules that break the bot’s internal event handlers and cumulative delta updates.

Questions:

Is OrderFlowBot 3.0 compatible with NT 8.1.6.0?

Has anyone patched the lock recursion or cumulative delta issues?

Is there a recommended NT version for full compatibility?

Thanks in advance — happy to help test or patch if needed.