@Dingo001 The directories and files need to be writeable by the web server process. That is usually www-data or apache depending on the linux distribution.
Thank you I should have thought of that. I seem to have got myself into a bind now. I got the error “Downgrade is not supported” and looked in the upgrade doco and it said it may be because the download was not complete. So I deleted the download file from /root/downloads/phplist-3.6 etc and restarted the upgrade page and it still says “Downgrade is not supported”
I am in a circle here. I do not have a /lists directory. the two files were in /bamail/config and /bamail respectively. bamail is the name I gave the instance. I deleted those files and had to add a index.html file as it \said it was missing. I pressed on with the update and it said it downloaded the update so I clicked next and I got the “Downgrade is not supported” message again.
I have deleted phplist from the server and will start over tomorrow with a fresh install.
Ok. Try to check that the file and directory permissions allow the web server process to remove and add files.
I have made a few changes to the updater code to try to show more information when something goes wrong. It is not yet released but you might want to try it.