It tells you exactly what the problem is, please see Joomla Backend -> Components -> Community Builder -> Configuration -> User Profile followed by the parameter W3C XHTML 1.0 Trans. compliance.Joomla registration is off, CB intergration is on.
Wait, this might be the problem, in the Kunena control panel:
"Problems detected in Community Builder integration:
Community Builder Profile integration only works if Community Builder is in W3C XHTML 1.0 Trans. compliance mode."
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