NT's connection doesn't work

[dhouston]

Hi, My NT connection worked 12 hours ago; now it doesn't. I've tried connecting to datafeeds from multiple computers. I've tried removing and reinstalling NT. I've tried using the simulator for a datafeed and I've tried using Interactive Brokers' datafeed. I get the same results: can't connect to data feeds.

When I try to connect to the simulator I get this error:

Login failed: Cbi.Connection.ConnectNow: Failed to call IAdapter.Connect: Object reference not set to an instance of an object.

When I try to connect to IB's datafeed, I get this error:

System.NullReferenceException: Object reference not set to an instance of an object.
at NinjaTrader.Cbi.Connection.CreateSimulationAccount (String accountName)
at NinjaTrader.Cbi.Connection.ProcessEventArgs(NTEven tArgs eventArgs)
at NinjaTrader.IB.Adapter.ConnectTimer_ElapsedNow(NTE ventArgs e)


I just bought a half-year subscription and wasn't expecting the program to breakdown within a week . Please help.

[dhouston]

i searched the forum and found my answer. deleting the mdb database file worked.