I encountered a problem with my new website athttp://www.hanshockx.nl. It started when I tried to logout. I got an 'empty' sidebar without any links while the site stil in edit mode (see image 1).
I searched the the discussions and found a clue that enabled me to logout using this link:
http://www.hanshockx.nl/index.php/dashboard/welcome...

When I tried to login again using the login link on the homepage I did get the login screen as usual. When I enter my username and password I these are accepted but than I get this message:

Not Found: The requested URL /login/authenticate/concrete was not found on this server.

Any suggestions to get this working again?

Hans Hockx