sentix wrote: ... during the registration process?

The registration form does not contain the language setting of the Joomla user object.

What do I have to do, to get the language setting in the Users profile to use it later by filter etc.

Current version:
J 1.5.25
CB 1.7.1

As a professional member (thank you) you can post in the Professional support category for better response times.

The language

In CB Configuration -> User Profile tab:
'Allow user to edit his CMS parameters in frontend' -> set to yes

In CB Fields Manager:
User Parameters field:
Mark for profile show and registration appearance.

This will show all user parameters on registration form.

I am currently investigating if only the language parameter can be shown.
If not I will open a tracker item for investigation.