Fixed! Rated 5 out of 5 stars

After updating and following instructions on main page (to create a new parameter), the add-on works again! Thank you! For those who didn't try what I did, read the instructions at the end of the about section.

This review is for a previous version of the add-on (4.9.17.1-signed). 

Rated 2 out of 5 stars

Downloading the beta solved the "0 bytes" problem at first, but it doesn't work again.

This review is for a previous version of the add-on (4.9.15.1-signed).