Unable to backtest EA, please help.

 

Something strange hapens when i try to backtest my EA. When i restart platform and start EA for the first time it is working, but when i terminate EA (stop buton), and press start again it shows:

2015.05.16 15:01:41    Core 1    connection closed
2015.05.16 15:01:41    Core 1    disconnected


and im unable to make backtest of my ea, until i restart platform. I don't know why but it appears that OnDeinit() is not performed after i press stop button, because when i open system monitor(it shows list of threads on Ubuntu) i see active metatester thread after i pressed stop button in backtester.

Please help, im desperated...