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IronFX Global: New MT4 Release Notification

Wednesday 12th of February 2014

As a result of the recent MetaTrader 4 (MT4) Build 604 upgrade implemented by MetaQuotes, the folders within the MT4 folder have moved. In addition, the MQL4 language has changed, and this may have interfered with your installed Expert Advisors (EAs) and indicators.

In the new MQL4 version all MQL4 applications should be located in the appropriate folders of <data_folder>\MQL4\ directory.

You can find the data folder (<data_folder>) for each copy of MetaTrader 4 terminal on your computer via the terminal menu or in MetaEditor: File - Open Data Folder.

Below are the steps on how to upload an EA after the platform is updated:

  • Select File from the MT4 platform, click Open Data Folder
  • In the dialog window, click MQL4 folder then Experts Folder
  • Paste your EA in Experts Folder
  • All old EX4 will work in the new MetaTrader 4 terminal. EX4 libraries compiled by the new compiler can be called only from the EX4 programs that have also been compiled in the new version.


In some cases, you may need to edit the path in #property include for included files (if relative paths have changed) in the source files. Please note that MetaEditor's root directory is now <data_folder>\MQL4\. All programs should be located in the correct subdirectories

In order to check the EA's compatibility please follow the below steps:

  • Select Tools → MetaQuotes Language Editor
  • Select View → Navigator (if not displayed already)
  • Select and double-click on the desired EA script
  • Click on Compile
  • If any errors are displayed, please contact your EA provider.


Should you have any questions please contact support@ironfx.com.