Chart won't reload correctly

[NickF]

Hi guys,

I was looking at a ES chart then switched instruments to 6E and all was fine. when I switched back to ES i got an error saying "Unable to load chart data. Please retry and report this error to NTcust svc. Object reference not set to an instance of an object."
It's the first time this ever happened. The time in the bottom of the chart is stuck at 11:46 and my recorded delta has disappeard. any ideas?
Thanks.

[NinjaTrader_Tim]

Hi NickF,

Thank you for your post.

Please follow the instructions below to repair the NinjaTrader database.

Disconnect NinjaTrader from any open connections via File > Disconnect
From the NinjaTrader Control Center window select the menu Tools > Options
Select the "Misc" tab
Press the "Repair DB" button
Press the "OK" button

[NickF]

That worked. Thanks Tim.