Hold down control key when starting NT 8 to start in safe mode. That will normally resolve problems with starting.

Comment out the SubStrategy properties when doing dev work on the chart. This will allow you to rebuild without having to add/remove the strategy. You can comment them back in when finished. 

Alternatively you can develop with the substrategy properties commmented-in in the strategy analyzer and it shouldn't have that problem.

If you leave substrategies commented in and do development on charts, you can just ignore the exceptions and re-add strategy until it works. The exceptions are not serious. Sometimes a window will open behind primary window-- you may have to close it to get rid of exceptions.

Make sure chart trader is set to the same account. Open it and set the account. Make sure chart trader is set to Hidden and not off.

If that doesn't resolve, check to make sure you can see a normal order on chart. Sometimes it is a problem with the database,

https://ninjatrader.com/support/forum/forum/ninjatrader-8/platform-technical-support-aa/104251-sim-101-there-is-no-market-data-available-to-drive-the-simulation-engine

Strategy must be enabled and market data must be running. Right click chart, properties, and show executions (marker or text).

Ctrl-F to go to chart properties. Check Auto-Scale and Auto-Center.

Market data feed must be active. If you are in replay- you must be playing back data.

NinjaTrader creates and destroys a temporary object for the property grid. This is often the source of unusual bugs and problems. You may try removing the substrategy properties. 

The SetDefaults and some of the state changes can be called multiple times as a result of the build/tear down process.

Right click the price scale. Change the margin type to "Price" and change the Upper Margin and Lower Margin so that the price is centered below the buttons. You may try around 6 points for ES for upper and for lower 1-2 points.

Compare backtesting resolutions settings. "High" or "Market Replay" are more accurate. Market replay is most accurate.

You must copy and paste the strategies into your NT 8 strategy folder and rebuild. The folder is normally in  your Documents folder under

\Documents\NinjaTrader 8\bin\Custom\Strategies\

You may optionally open NinjaScript editor. Click Visual Studio edit. Right click on the folder in Solution Explorer->"Open Folder".

You should use the BeyondBot close trade button for graybox trades. NinjaTrader 8 close button will close and disable all strategies.

If you wish to BOTH place 100% discretionary trades and graybox trades, you have 2 options:

1. Create a buy button in BeyondBot that enters immediately. We may add this in next update as an example.

2. NinjaTrader support recommends using separate accounts. Create a sub account and trade in two accounts.