I believe I am having the same problem as this user. Since the terminal update FST cannot find the MT4 EA.
Everything looks fine within the MT4 Journal however when I enter the connection id into FST, the FST application goes into a 'not responding' state. I'm having the exact same issue with multiple brokers since the update. Anyone else experiencing this issue?

Yeah, it is a serious issue indeed. For more information about the MT4 update, please read: http://forum.mql4.com/60555

I hope that I get FST working again.

Additional information about the problems of the MT4 build 600: http://www.forexfactory.com/showthread.php?t=469491

Не дружит трейдер с build 600. Пытался установить в соответствующие разделы эксперта и dll - не работает. MT4 файлы даже не видит. Наверное, по этой же причине возникают проблемы и с PRO. Plz help.

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Not friends trader with build 600. Tried hands to establish in the relevant sections of the expert and the dll does not work. MT4 files't even see it. Probably for the same reason there is any problem with the PRO. Plz help.

Изменился формат файла HST.
Format 600 HST is changed, for import from metatrader need change in MetaTaderImport.cs.

private void ImportHstFile(string file)
{
...
DateTime dt = new DateTime(1970, 1, 1).AddSeconds(seconds); // bar time
decimal open = Math.Round((decimal) br.ReadDouble(), digits); // open
decimal low = Math.Round((decimal) br.ReadDouble(), digits); // low
decimal high = Math.Round((decimal) br.ReadDouble(), digits); // high
decimal close = Math.Round((decimal) br.ReadDouble(), digits); // close
decimal volume = Math.Round((decimal) br.ReadDouble(), digits); // vol
//-----------------------------------------------------------------------------------------
Change
//-----------------------------------------------------------------------------------------
...
DateTime dt = new DateTime(1970, 1, 1).AddSeconds(seconds); // bar time

    br.ReadInt32(); // datetime compensation of length

decimal open = Math.Round((decimal) br.ReadDouble(), digits); // open
decimal low = Math.Round((decimal) br.ReadDouble(), digits); // low
decimal high = Math.Round((decimal) br.ReadDouble(), digits); // high
decimal close = Math.Round((decimal) br.ReadDouble(), digits); // close
                       
    decimal volume = Math.Round((decimal) br.ReadInt64(), digits); // vol
    br.ReadInt32(); // spread
    br.ReadInt64(); // real_volume

I have problem
cannot load MT4FST library.dll When my Mt4 upgrade???
I copy files MT4FST library.dll to folder LIBRARY - MT4 but it does not see

How to solve this problem?

I solved this problem. Now my Trader are connected to 600MT. I will check it in trade and will lay out here, maybe tomorrow. EA and DLL are corrected.

Thank's. I build new topic with attach.