Can't login on backend

Hi,

I have installed CB on my website yesterday, followed every step of the handbook and have disabled the login where and as required. I did also configured my website doing this step:
"11) If you want to allow registrations only through Community Builder
(recommended):
- in Admin->Components->Community Builder->Configuration->Registration:
set "Allow User Registration" to
"yes, independently of global site setting"
- Admin->Site->Global Configuration->System (Joomla 1.5/1.6/1.7):
set "Allow User Registration" to "No".
or on Joomla 1.6.0 Administration->Users->User Manager click the
Options button and set 'Allow User Registration' parameter to 'No'."

And it was working perfectly. Now I tried to open my "/administrator/index.php" and login on my backend and this message is shown:
"Use a valid username and password to gain access to the administrator backend."

I did tried to login first in the frontend and then in the backend but it didn't work.

Can anyone help me?

Thx,

CB has nothing to do with Joomla backend access

nant wrote: CB has nothing to do with Joomla backend access

OK, thanks.

Btw, any help with that?

Looking out in Joomla Forum, I found out that this problem maybe because I deleted de Login Module, is this correct?

mabizetti wrote: Looking out in Joomla Forum, I found out that this problem maybe because I deleted de Login Module, is this correct?

Deleting the Joomla login module does not affect backend login operations (as the login module is a frontend module).

If you disabled any of the Joomla plugins (in Joomla plugin manager), then you might have an issue.