Build 210 problems with EA's?

 
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I have heard that Build 210 apparently 'does not work' (that was the terminology) or rather, plagued with errors when running EA's on demo. Is this fact or fiction?

If it is fact, how does it currently affect optimizing and the ability to design/build new EA's if i don't know whether there are problems in MT4 or the EA logic itself?

FxNorth
 
not fact