I am able to create the package just fine.
Then, able to download install file.
But, when I attempt to save the Duplicator file, it goes to a 404 "Page Not Found" error. I return to the Duplicator page and the package still shows there, but I cannot download it.
I have tried uninstalling and reinstalling a couple times, but no go.
Also, I have used Duplicator successfully on two other sites that are almost identical in configuration and they are fine.