Please do not resurrect year and a half old topics. Simply create a new one a link to it if you feel it's relevant. Pushing extremely old information to the top of the forums just doesn't benefit anyone.
This issue has long been fixed. Ensure your install is up to date. Enable debug mode and maximum error reporting in Joomla global configuration if issue persists to expose any errors. Review your conditions carefully to ensure you're not hiding core fields like email, name, username, or password which are mandatory for Joomla to function.
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