Re: Everything lost ? Big mystake in admin config...
Hi Luc,
Don't panic. You need to use phpmyadmin and access the "tiki_preferences" table. You can edit the row with the problem and remove the problem code you entered. Once the database is updated and you have done a Control/Reload in your browser, you will probably have everything back.
If you search the forum you will find others have had similar problems. Here is an old post I made trying to help someone else with this:
http://tiki.org/tiki-view_forum_thread.php?comments_parentId=44444&forumId=4
It is 1:00 am here and I really need to go to bed so I can't help much more now. The "admin area" you are referring to is the Look and Feel, Customization tab.
Good luck,
Tom