Joomfish uses a URL parameter to determine language, CB does not support this parameter so it is not appended to any of the POST urls. The only way for Joomfish to provide cross-extension support is they need to have a re-write rule to re-write those URLs. We've received no contact from them in attempts to integration CB. CB also does not support any SEF other then Joomla SEF. Please bring your issues to your SEF and Joomfish developers.