puzzling error msg in form validation controller

[eluser]oldnews[/eluser]
core problematic line #38, with enforced line breaks:

Code:

$this->email->message($address', '$city', UT '$zip', photo description: '$description
', location: '$location', primary phone: '$mainphone', optional secondary phone: '$extraphone
', optional tertiary phone: '$altphone', certification of minimum age of 18 and UT residency:
'$ageutresidency);