for reference my php for the page types are as follows:

<?php
/**
* Defines the HomePage page type
*/

class HomePage extends Page {
static $db = array(

'ContentTwo'=> 'HTMLText'
);

   static $has_one = array(
);

function getCMSFields() {
$fields = parent::getCMSFields();

$fields->addFieldToTab('Root.Content.Main', new HtmlEditorField('ContentTwo', 'Content Two'));

return $fields;
}

}

class HomePage_Controller extends Page_Controller {
   
}

   
?>

<?php
/**
* Defines the WhatWeDo page type
*/
class WhatWeDo extends Page {
static $db = array(

'Content2'=>'HTMLText',
'Content3'=>'HTMLText',
'Content4'=>'HTMLText',
'Content5'=>'HTMLText'
);

static $has_one = array(
);

function getCMSFields() {
$fields = parent::getCMSFields();

$fields->addFieldToTab('Root.Content.Main', new HtmlEditorField('Content2', 'Content 2'));
$fields->addFieldToTab('Root.Content.Main', new HtmlEditorField('Content3', 'Content 3'));
$fields->addFieldToTab('Root.Content.Main', new HtmlEditorField('Content4', 'Content 4'));
$fields->addFieldToTab('Root.Content.Main', new HtmlEditorField('Content5', 'Content 5'));

return $fields;
}

}

class WhatWeDo_Controller extends Page_Controller {
}

?>