I've put a link to the "Safety First" forum on the website's front page  and also I thing to make a direct link to it from the program.

We have to explain all dangerous aspects to the unexperienced users.

- If the exit has passed (open price of next bar is higher than the PT or lower than the SL) then you exit at open (overshoot)
- If both levels reached at the next bar, you assume the worst and mark this as a loss, since you have no way of knowing for sure which one hit first.
- If no level was reached on the next bar, you continue the logic to the following bar

And lot to do if the user set Stop Limit +-5 pips? The deep scan cannot help us here, except a tick scan!

This situation has to be changed as soon as possible! The fastest is to mark the "Stop Limit" and "Take Profit" as "For demo only!!!" like Fibonacci.

I know, it is nice to have many beginner strategy writers come to this forum and share their 5-minute get rich strategy, and get all excited about something that will never work in real life, but I believe there should be a different approach here.

Accuracy of backtesting should come first. Nice GUI, fancy indicators and other bells, are nice but are only a secondary priority. Always.

So, to answer your question - I think that stop/limit exits cannot be removed from FSB - these are the basic exit rules and must stay there.

One solution that is possible (without deep scan) is to do the following:
1. Assume the worst possible execution order
2. Apply stops at next bar only.

This means that once you enter the trade, it stays "naked" until the next bar, then, the next bar has a logic of:
    if not SellAtStop then SellAtLimit

Which means, if the next bar hits both limit and stop orders, it is considered a loss since you have no way of knowing which one hit first.

Of course, if you plan on doing a deep scan sometimes soon, I wouldnt bother working on this logic, since it has its own inaccuracies - only in this inaccuracy case, it is a pessimistic inaccuracy rather than an optimistic one, so if a user will be able to make a working strategy, there is more chance it will actually work in real life.

Do you know other solution?
Or, to mark the indicator as unsafe! (Remove it from FSB!!)

The same logic is used in the derivative indicators: Stop Loss and Take Profit

The Stop Limit in older versions before 2.4.0.3-2 send unlimited exit order. In most cases this is not problem, but is possible the position to be closed/reversed earlier by the opposite signal.

Example:
  buy at: 1.0100
  Stop Limit: +-50

if the position has been closed at 1.0140 (by an opposite entry signal), the exit orders are not canceled. FSB will cancel it when the market touch the exit price (FSB cancels an exit order when there is no open position).

If the position has been reversed at 1.0110  FSB sends buy exit orders at 1.0160/1.0060
The problem is coming  when the market reaches the nearest exit 1.0150 (from the initial position) and we are short, but we have a sell exit order?!? I think FSB calculates this situation correctly, but I'm not so sure.

The new version sends valid to the end of the period orders. And if there is reversing before the exit FSB simply sends the new exit orders.

We need more tests to be sure that the new logic works well!

This does not cover the closing in the same bar problem!

edit:
The exit logic does not average the exit levels (if the position's amount has been changed).
FSB is very strict to the exit signals. It cannot increase, reduce or reverse the existing position. An exit signal is "exit" - close all the open lots.

Changes with Forex Strategy Builder 2.4.0.3 - 2 Unstable

  * More symbols - added
  * Take Profit - logic improved
  * Stop Loss - logic improved
  * Stop Limit - logic improved
  * Trailing Stop -  logic improved
  * Close logic conditions - only when the "Closing point of the position" is "Bar Closing"

We need some kind of warning when are doing something unusual (unsafe).
-- zero swap
-- zero spread
-- Manual operating with "Use prev. bar value"
-- some non-logical indicators (if any)!
...

Be careful!!

No wonder it was so easy to make money using the stable version. I was "making" in excess of 70K pips for EURUSD M1 in 20 days

But still FSB is the easiest way for a novice like me who don't fully under what spread & swap number are, to come up with a wining forex strategy.

For USDCHF Daily it make 34,670 pips over ~30 yrs averaging  1,100 pips per year and the profit line is a straight line up. Using risk managing technique ( a feature I had earlier requested) I am sure it could grow to a much higher number than this.

Forex Strategy Builder V 2.4.0.3-1 Unstable
Strategy name: Daily_30K_AllCurrency
Exported on: 4/18/2007 2:00:48 AM

Market: USDCHF 1 Day
Spread: 4 pips
Swap Number: 1 pip

Balance: 34670 pips
Minimum account: -17 pips
Maximum drawdown: 589 pips
Time in position: 44 %

The best usage of optimizer is to start it 2-3 times. After that if the values are near to the limits adjust it and try again 2-3 times.

If the result is not so good, you have to start from the initial values (cancel the optimization and again).

You can test the strategy for curve fitting by changing the parameters one by one a little bit up and down. If there is a significant change of the performance the strategy is over-optimised.

When I tranfer the strategy file from the stable version to the unstable version, the unstable version gave the same result. Hence I have to conclude that the is some issue with the coding of the optimizing function in the unstable function.