Sorry, for 404!
It's only when i try to see a draft page.
I deleted "admin" and, using BWPS, made a new user with admin rights.
I doesn't work!
I made another user, admin and keymaster, same problem.
I can do all i want: write pages and posts,... i can do all i want on admin page. But when i make a new page (or post), and click "preview" i get an error.
I must publish first and then i can see it like visitors.
I log using "http://mysite/wordpress3/wp-admin/", no problem.
I click "go to the site" of WP-admin-toolbar, i lose all my rights. If y want to have my admin-rights, i must return to "http://mysite/wordpress3/wp-admin/" another time.