Johnrob

Thank you very much! The solution of [paschembri](https://github.com/paschembri) is confirmed. The following worked **after** having cleared the cache only for `localhost`. Safari > Settings > Privacy > Manage Website Data...

Unfortunately, one has to force removal of traces of `Julia` and `juliaup` in several profile files using the `su`. This should not be the case. I manage to successfully remove...

Well, apparently, the installation sequence does not work as well in my box. So likely that this is more fundamental than I expected. Sorry.

There should be a way to edit the Graphviz plugin to change the comma into a space. I believe it will workout fine.