Once the data downloaded, it could absolutely not launch any MT4 terminal to export it, except with the help of Birt's suite software that it detectes.
And later this afternoon I noticed it is impossible for the Tickstory app to locate or display the MT4 terminal of an Alpari account, thus I can't export files on the terminal of this broker and can't do backtesting. A message ask for C-disk location but the software doesn't locate Alpari's terminal...
