optimization - only one pass with trades

 

On MT4 build 1045 I try make optimization my strategy. Optimization made some passes, but only one (first) includes trades.

Because of my strategy is not simple, For survey this problem I made very simple strategy. It only make order send in init section and on first tick. But this have this problem too.

It looks as a MT4 doesn't run strategy in second pass and later. Older MT4 builds worked OK.

I use Tickstory data. If I use "platform" data optimization is OK!

Thanks for help.

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I found it. Pairs with bad result had FXT file greater than 4 GB. MT4 didn't get any warning.

Why has MT4 this limitation? Is possibility to use several smaller files?

Reason: