I don't know if these 2 problems are related but i have having a problem with content not saving when i click save or save and publish on one of my page types called InsidePage. All my other templates work just great.

Here is my code for the InsidePage Template.

<?php
/**
 * Defines the InsidePage page type
 */
 
class InsidePage extends Page {
static $db = array(
	'Email' => 'Text',
	'Phone' => 'Text',
	'Location' => 'Text',
	'Webstie' => 'Text',
	'Twitter' => 'Text',
	'Facebook' => 'Text',
	'Flickr' => 'Text',
	'StudentDevelopment' => 'HTMLText',
	'Sustainability' => 'HTMlText',
	'Diversity' => 'HTMLText'
   );
  
static $has_one = array (
	);

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

	$fields->addFieldToTab('Root.Content.Contact', new TextField('Phone'));
	$fields->addFieldToTab('Root.Content.Contact', new TextField('Email'));
	$fields->addFieldToTab('Root.Content.Contact', new TextField('Location'));
    	
	$fields->addFieldToTab('Root.Content.Links', new TextField('Website'));
	$fields->addFieldToTab('Root.Content.Links', new TextField('Twitter'));
	$fields->addFieldToTab('Root.Content.Links', new TextField('Facebook'));
	$fields->addFieldToTab('Root.Content.Links', new TextField('Flickr'));

	$fields->addFieldToTab('Root.Content.StudentDevelopment', new HtmlEditorField("StudentDevelopment","GreyboxContent"));
	$fields->addFieldToTab('Root.Content.Sustainability', new HtmlEditorField("Sustainability","GreyboxContent"));
   	$fields->addFieldToTab('Root.Content.Diversity', new HtmlEditorField("Diversity","GreyboxContent"));

	return $fields;
}	

}
 
class InsidePage_Controller extends Page_Controller {

}
?>

I think the problem is happening when i add the HtmlEditorFields to the CMS because when I comment out those lines run a dev/build and reload the admin everything works just great. could someone help me with this?

/**
	$fields->addFieldToTab('Root.Content.StudentDevelopment', new HtmlEditorField("StudentDevelopment","GreyboxContent"));
	$fields->addFieldToTab('Root.Content.Sustainability', new HtmlEditorField("Sustainability","GreyboxContent"));
   	$fields->addFieldToTab('Root.Content.Diversity', new HtmlEditorField("Diversity","GreyboxContent"));
**/

some inconsistencies (may or may not actually help)...
- Website not Webstie
- HTMLText not HTMlText
- HTMLEditorField not HtmlEditorField
- change your double quotes to single quotes

Also should some of those fields be Varchar instead of Text?

Tried all of those still no go. I would really like to get this fixed but I'm pretty new to Silverstripe and i wouldn't know how to tackle this.

Can anyone else take a stab at it?

I guess I could supply a little more information.

Version: SS 2.3.3
Installed Modules: DataObjectManger, SIFR, and SWF Upload

I would really like to know what is wrong with my code, I've just started Silverstripe and love it and I would hate to have to use text area fields over HTMLEditorField.

Did you really check the syntax on all items? It's HTMLText not HTMlText!
I copied your class, tidied up and it works... (I also used addFieldsToTab instead of addFieldToTab, it's easier to add multiple fields to one tab this way)

Here's the code: http://pastebin.com/m4bea5262

Update Oh yeah, and I changed your Text members to Varchar. If you really need more than 256 chars per field, you can change it back of course.

ME TOO , HELP ME!!!
<?php

class HomeSlider extends DataObject {
static $db = array(
'Title' => 'HTMLText',
'Summary' => 'HTMLText',
'SortOrder' => 'Int'
);
static $has_one = array(
'Image' => 'Image',
'Page' => 'Page',
'PageLink' => 'SiteTree'
);
public static $default_sort = 'SortOrder';
function getCMSFields()
{
$fields = new FieldList(new TabSet('Root'));
$fields->addFieldsToTab('Root.Main', array(
new UploadField('Image','Image(230x170)'),
new HtmlEditorField('Title'),
new HtmlEditorField('Summary','don tom tat'),
new TreeDropdownField('PageLinkID','Choose a page', 'SiteTree')
));
return $fields;
}
static $summary_fields = array(
'thumb' => 'Image',
'Title' => 'Title'
);
function thumb() {
return $this->ImageID != 0 ? $this->Image()->CMSThumbnail() : 'no-image';
}
}