All I can tell you is to verify the links.
The messages tells you that it tries to create a symbolic link and it rejects.
The reason can be due to the fact that the directory already exists with another link
or that the target directory does not exists
or that you have a problem of permission.
If you are able to create symbolic link for other website, all I can tell you is to verify each path.
If you want that I have a look in your environemnt, this is still possible with our billable support that you can order at
www.jms2win.com/en/joomla-multisite?page...35&category_id=1