I installed Pawtucket2 in a /pawtucket subdirectory of the Providence installation, as indicated in your manual instructions. I then created a symbolic link in /pawtucket to the /media directory of Providence. However, when accessing Pawtucket in the web browser, the following error message appears: “It looks like the media directory is not writable by the webserver ...”.
I then removed the symbolic link as a test and created a new directory /media/name-of-my-ca-installation in /pawtucket instead. Now the error message in the web browser is gone, but of course the images from Providence are missing in Pawtucket.
What could have gone wrong when creating the symbolic link, that explains the error message? The /media directory is writable by the web server, I checked that. So the error message is not correct. I used relative paths when creating the symbolic link; maybe that's the problem?