I write because I cannot find a solution to this problem and I hope you can help me.
From build 600 and above of MT4 (I currently have the latest version, build 625) I can no longer perform backtest with Volatility Factor EA and WallStreet FOREX Robot.
After reading M1 data, MT4 crashes as soon as the engines are attempting to open a position.
With Forex Diamond EA this does not happen and everything works perfectly (maybe Volatility Factor and WallStreet use DLL and Forex Diamond not?).
I put the EX4 under MQL4-->Experts, and the DLL under MQL4-->Libraries
This problem occour only in backtest mode and not in real mode, I contact the support but they answer to me that they don't have such problem.
Thank's in advance
Finally supported team helped me to solve the problem.
Simply I need to attach the robot on a live chart before make the backtest.
Now works perfectly, thank you...