It cannot decompile files created with MT4 Build 600 or higher (released after February 2014), as these versions use a different compilation method that produces binary code rather than byte code.
: Decompiling software without the developer's permission may violate intellectual property laws or the terms of service for specific Expert Advisors (EAs) and indicators. Ex4 To Mq4 Decompiler 4.0.432 - Updatedl
It cannot decompile files created with MT4 Build 600 or higher . Newer versions of MetaTrader use advanced compilation that produces binary code rather than byte code, making full recovery practically impossible. It cannot decompile files created with MT4 Build