BackTest - stops after a few EA tests

When I do backtest on my EA's it seems to work right for a couple of tests, and then I it just keeps giving my the Same results no matter change changes I make to the EA. It seems it keeps one of the setting in memory and I can not get it to change. The only way I can test more is to install a new demo and download the history files again. That works for a while, then I get the same problem.

sounds like an issue with your code

Assuming that you are using MT4 as you don't say -
Are you changing the values in the variable column of the inputs?
Do you have optimization unchecked?
You could try clicking on reset, bottom right corner of the inputs window and entering the new variables
Or write the values into the extern parameters in the code and recompile. Then reset as above.

I do not remember seeing a reset button, I will try that. The problem happens whether I have the optimization checked or unchecked, it does not seem to matter. I have tried recompiling the EA several times and that did not help. The EA will run on the Back-test and optimization a few times and then stops. My programmer does not think there is anything wrong with the code...

Yes Mt4