WordPress 3.0 Multisite using sub-directories not creating

Good Evening All,

I’m using dreamhost and have installed wordpress using their advanced option of the one click installers. It is in sub-directory WP.

I have setup multisite and have the superadmin menu and the option to create sites using sub-directories.

However when I create a site i enter:
‘TBLog’ into the site address field

and then an appropriate site title and email address (tried with existing and non-existing user email)

It then goes through and creates according to the console but it gives the site url as: https://mysite.commysite_com_1tblog

which is not a valid url.

I cannot see where it has actually tried to create the site at all and I cannot make the site work.

I’m not sure what exactly i’ve missed but am sure it is probably something small.

Thanks in advance.