Can't download exported files

Hi,

I just installed EasyPopulate 4.0, as downloaded from Github. I'm using ZC 1.5.1.

All looks to have worked ok, but I cannot download exported files...

If I click on the Download link for a file I just get an error message in a new tab:

"Forbidden
You do not have permission to access this document. "

I'm using Firefox.

Any suggestions to fix this?

Thanks.