550 error ftp in "main directory"

I just moved from server I installed the control panel ISPConfig 3 following the guide "The Perfect Server - Debian Squeeze (Debian 6.0) With BIND & Dovecot"

For symfony 1.4 I need to access outside the folder "web", create / edit and files / folders

- cgi-bin
- log
- private
- ssl
- tmp
- web
- webdav

But when trying to create a file outside me back "550 Can not create directory: Permission denied"

Thanks for your time and forgive my bad English

 

I tried to change the folder owner, root user / group ftp:

Code:

chown-R web1:client1 /var/www/clients/client1/web1/

But get the following error, as root:

Code:

chown: changing ownership of `/ var/www/clients/client1/web1 / ': Operation not permitted

I really do not where to look

 

Now I'm embarrassed look I searched but found nothing.

Thank you very much