New MT4 Update Build 600 BEWARE!!!

MetaEditor has changed in MT4 build 600 and as a result some expert advisors and indicators may have to be recompiled. Please follow the steps below to recompile your experts and indicators.

1. Open MT4 > go to File > Open data folder > double click on the MQL4 folder

2. Double click on the name of the expert advisor or indicator to open the file in MetaEditor.

3. If there are any errors when compiling the expert or indicator you will see those appear at the bottom of MetaEditor. You will need to address these errors before you are able to add the expert or indicator onto an MT4 chart.

Please follow the instructions below to save backups for your MT4 files (expert advisors, indicators, libraries, templates, and profiles). It’s often a good idea to save a backup before uninstalling/reinstalling MT4, transferring files to another installation of MT4, etc.

1. Create a new folder where you would like for your backup files to be saved. To create a new folder right click > go to New > click on Folder.

2. Navigate to where your where your MT4 files are saved on your computer. Depending on the build of MT4 you are using they could be saved in a couple of different locations.

a. Build 509 and older: C:Program Files (x86)FXCM MetaTrader 4experts

b. Build 600: Open MT4 > go to File > Open data folder > then double click on the MQL4 folder. Depending on your settings this may go to either folder location below.

i. C:Users[user name]AppDataRoamingMetaQuotesTerminal[32 character long MT4 ID]MQL4Experts

ii. C:Program Files (x86)FXCM MetaTrader 4MQL4

3. Copy the folders you would like to save and paste them into the new MT4 backup folder.

If you receive an error message when you are trying to uninstall MT4 stating you do not have sufficient privileges you will need to edit a value in your computer’s registry.

1. Press Start then type in “regedit” and press enter. This will bring up your computer’s registry.

2. Press ctrl + F and type in “EnableLUA”. (You can also find this by going through the menu tree on the left. You would need to go to HKEY_LOCAL_MACHINE > Software > Microsoft > Windows > CurrentVersion > Policies > System)

3. Double click on EnableLUA in the right side of the registry editor window.

4. Change the value data from 1 to 0 and press OK.

5. Close the registry editor window and restart your computer. After you have restarted your computer, you will be able to uninstall MT4 though the task manager.

6. Repeat Steps 1 to 4 above only this time change the value data back from 0 to 1 and press OK.

7. Close the registry editor window and restart your computer. After you have restarted your computer, UAC will be enabled on your computer as it was previously.