I've just installed a fresh install of WordPress and before doing anything else I've tried to setup a multisite, which I would like to do with subdirectories.
But when I click on Network Setup I get the notification:
Because your installation is not new, the sites in your WordPress network must use sub-domains. The main site in a sub-directory installation will need to use a modified permalink structure, potentially breaking existing links.
Can anyone tell me what I'm doing wrong, or what I need to change to allow subdirectories?