[cric2k]

I've figured out that the "$this->post['pagetext_html'] =.." is not referencing the postbit code in the plugin php.

Edit: "$this->post['pagetext_html'] =.." contains the html and is replacing the characters to give the Guest error message, but it is not actually affecting the postbits which are displayed on the final page, either it is being over-written in later executed code or the actual outputted html is populated in another variable.