Stop orders won't stay on charttrader

[Marshmellowhead]

Hi,
On occasion, when I have an open position and I right click on the chart and place a stop order, the order will appear on the chart for a second then disappear. I then cannot enter a stop order or even use the "buy ask" etc. buttons to the right. I have to close the chart and create a new one. Any idea what could be causing this?

Thanks

[NinjaTrader_Jason]

Please take a look at the following link, which will provide you helpful tips to improve the performance of NinjaTrader and reduce RAM load. Most likely, NinjaTrader is requesting too much memory due to the volatile circumstances recently.

http://www.ninjatrader-support.com/HelpGuideV6/PerformanceTips1.html

Try reducing the amount of indicators on your chart or set "Calculate on bar close" to True for the indicators. Reducing the amount of historical data in your chart would be helpful as well.