How to use .ex4 files?

Hi,
i'm relatively new to MT. I wish to use TD sequentials, but I can only find a ex4 file from AHU. After I've downloaded it and transfered to my MT folder, it appears on my Expert advisor. But, when I click on it to attach to my chart, nothing happens.

Pls advice.

Also, i realised that mq4 files are much easier to upload - just open and compile. what's the difference b/w a mq4 and ex4? Are there any mq4 TD sequentials by AHU?

Thanks guys,

Han

ex4 is a compiled mq4

The TD Sequentials is an indicator, or more specifically a custom indicator. The *.ex4 file is the compiled file of the *.mq4 code, and is the file that the mt4 platform executes. It should be placed into your "C:\Program Files\MetaTrader 4\experts\indicators" folder. It will not be available as an indicator from the "...\experts" folder.