Following the question about pro-forma comments I installed them and then tried to enable the remote source, which seemingly failed (at least it took a very long time ™ without any noticeable network activity).
So I finally cancelled the process. Result: whenever I click on auto nothing seems to happen at all. I disabled, then uninstalled and reinstalled the script - nothing.
This happened in chromium as well as in firefox - I'd like to get back to the local version for now.