The issue is resolved when choosing the correct format for the tick data that was being exported. It was my mistake.
All I had to do was choosing the following options:
1. Export to file
2. Data Output: Timeframe: Tick
3. Output format: Pre-defined: Generic tick format (comma delimited)
After that I run the CSV2FXT script and converted the tick data csv file to the corresponding fxt and hst files. Now everything is running ok when I do the backtesting. The instructions to run CSV2FXT script are at Birt´s website.
I haven´t tried yet the ” Export to MT4 ” option, but will try soon.
thanks a lot!