NT7b18 crashes when hitting backtesting tab

[TakisTakis]

Here is the crash report

Edit I sent it via mail

[TakisTakis]

6.5 crashes too..... what is going on ?

I went to 6.5 to work a bit and it started crashing there too. Same situation, when I hit backtest (the same button that I have hit sooooo many times). It goes out. Nothing in the trace files.... wierd

[NinjaTrader_Bertrand]

TakisTakis, could you please direct the full logs / traces from your NT7 to us via Help > Mail to Support?

What exact error message do you see if the crash occurs?

[TakisTakis]

Thanks I sent it to you via mail

I get no error. It just goes out. I hit the tab or backtest and the whole thing disapears leaving no trace behind...wierd

[TakisTakis]

Why the apprentice should know well how inheritance works before starts..

Yes, there is something going on with inheritance, NT7 and .NET which is beyond my knowledge and I should not mess around with it ..





I have found one more element that may lead me to resolve the mysterious backtesting bug.



- After I cleanly reinstalled the NT7b18 I proceeded adding one by one the strategies until I arrived to the one that originally caused the problem. Well it caused the same bug again, hitting the backtesting killed everything....

- When I moved that strategy to NT6.5 I lost that too so I had to kill that too.

- I then rereinstalled NT7 (after backing up database) and proceeded adding one by one the strategies. Then I arrived to the root of the evil:

In that strategy I do some things that should not be done I think with NT7b18:

I form an inheritance chain that may cause trouble:

I inherit a class NTorder from a class NTSystem and a class NTtrade from class NTSystem and then I inherit NTSystem from MyCustomStrategy(called DebugLand) which inherits from Strategy (NT's own class)

 public class DebugLand : Strategy
{
 ...
public class NTSystem : DebugLand
{
...

public class NTorder  : NTSystem
{

...
}
public class NTrade : NTSystem
{


}

} 

When I hit compile the whole NT7 dissapeared without a warning. Watchout that I was using nested classes trying to use inheritance. The reason was that i wanted to access the Print fuction that belongs to strategy from inside the classes. If i do not inherit and just use the classes I will get a "cannot acess non-static member from a nested class" error.

When I relogged I took out the offensing strategy and in the edit Ninjascript there is nothing weird but when I hit the bactesting I see the above classes appearling as valid strategies in the backtesting tab but they do not appear in the edit ninjascript list ! (Nor the mother DebugLand because I deleted it!)!

I sent this message with traces, logs and other to your support.


PS. For those that are interested i am building a system that will emulate the function of NT for unmanaged orders. It will do all the exposure calculation, PnL, account equity and account balance for unamanaged orders because the build in NT system gives false reading during backetsting for unamanaged orders.

[NinjaTrader_Austin]

TakisTakis, unfortunately this is unsupported territory.

P.S. Nice picture for the situation.

[TakisTakis]

P.S. Nice picture for the situation.

Lol, yeah I know I felt very proud for finding it