: Older versions of MetaTrader (before 2014) were easier to decompile. Modern builds (post-600) use advanced encryption and obfuscation, making full recovery of human-readable code nearly impossible.
: If your "fix" just involves getting it to run, ensure the EX4 is placed in the correct MQL4/Indicators or MQL4/Experts subfolder and then refresh your Navigator panel . convert ex4 to mq4 online free fix
Even the best paid decompilers (which cost $200–500) yield only 60–80% usable code. No free online tool does better. : Older versions of MetaTrader (before 2014) were