Any solutions to this problem yet. I am experiencing the same thing:

Hi,
Community Builder user registration does not work with JoomSef turned on. The standard Joomla registration works perfectly fine.

When registering using CB's registration forms, on clicking the \"send registration\" button, it just navigates to the profile page and throws an error that the page is restricted for logged in users only.

If I turn off SEF, then the registration works perfectly fine.

Is this a know issue, is there a fix for this one.

cheers