In order to load the EA properly, it is necessary to navigate to to the "Experts" folder through your MetaTrader Terminal. Let’s try this:
Save the Trade Manager EA (ATR EA) to your desktop (by clicking right clicking and selecting “Save As”)
With MetaTrader open, click "File" then select "Open Data Folder" from the drop down menu.
Once the Data Folder is open, Select the MQL4 Folder, and then the "Experts" folder.
Drag the Trade Manager EA file from your desktop into this folder then restart MetaTrader.
After you restart MetaTrader, use the "Navigator" to select "Experts" then drag the Trade Manager EA to your chart. When you drag the EA to your chart, please be sure to click on the "Common" tab and ensure that a tick mark is next to “Allow Live Trading”.