Форумы / Cotonti / Support / Comments for Guests

I deinstalled ComCAPTCHA to use Comments for Guests (Cotonti)

When a guest or user submit a comment he gets this error:
Fatal error : SQL error : Unknown column 'page_comcount' in 'field list'

But the comment is submitted.
Is there something I missed during install?

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Sorry, I have created this in wrong section, should be plugins.