One reason might be that the MT4 build version you use is not the same as the version used to create the EA. Other EAs or indis running could also provoke the crash. More info: https://forum.mql4.com/22328
I also have build 226, and the crashes stopped sometime ago. What I did was deleting all ex4 files and let MT4 to recompile all mq4 files again. Also downloaded the latest myfxbook EA.