Sorry it's taken long to get back to you, I've double-checked and this one definitely works. As Mrtools said, make sure the indicator's name stays the same. Don't rename it or let Windows add any numbers or brackets to the filename etc.
And if you have any previous versions of this indicator in your MQL4>Indicators folder, be sure to remove them first before copying this one over.
Once you copy this one over, just refresh the indicators list in MT4 and you're good to go