Kcaptcha session vars not being set

[eluser]bmgz[/eluser]
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[quote author="Derek Allard" date="1248626274"]How are you having the user leave the page they are on and arrive at the new page?[/quote]
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I have a form and a captcha, which posts to a function that validates the form and inserts the record upon success OR loads the form view again...

I reckon I should probably use one of the existing CI captcha libs...