Unknown instrument error

[Futures_Shark]

I am getting errors:for example,
Market Data Request rejected : unknown instrument (ES 09-07)

This is for all instruments in my default list. THe only change I made to the default list was to remove symbols formated as ES ##-## that were added when I was testing a DTN data feed.

I called my broker and everything on their end seems to be running fine. I'm connecting through Trading technologies.

[NinjaTrader_Dierk]

Likely your instrument setup is screwed up. You need to revert to default:
- terminate NT
- copy <program files>/NinjaTrader6/db/Instrument.txt to <my documents>/NinjaTrader6/db
- restart NT -> instruments will be reset