As I tested the EA on my GBP/USD or GBP/JPY AlpariUK demo data (15M Open price only) no zefo devide error happens.
I don't have not so long term data as you and can't reproduce your situation.

Do you mean you can't even backtest this EA at all?
Is the same thing happening to others who downloaded this EA?

Again, I'm a begginer at mq4 and don't know well about "zero devide error".
I studied about it a little, but no clear explanations about this error and clear causes that happens and how to fix it were found.

Can anyone explain this error clearly? Thanks.