Hi here is my code in Producto.php, is a little change from the "extend a basic site" tutorial. (staff part)

class Producto extends Page {
static $db = array(
);
static $has_one = array(
'Foto' => 'ProductPage_Image'
);

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

$fields->addFieldToTab("Root.Content.Images", new ImageField('Foto'));
return $fields;
}
}

class Producto_Controller extends Page_Controller {

}

class ProductPage_Image extends Image {
function generateThumbnail(GD $gd, $width, $heigth) {
$gd->setQuality(90);
return $gd->paddedResize($width,$heigth,"F0F0F0");
}

public function Thumbnail($width)
{
return $this->getFormattedImage('Thumbnail',$width, 70);
}
}

i create a few page of this type and add images to every product.
All this works perfect in live site, Thumbnail are created perfect.

But in CMS when click "Files & Images" i get : Fatal error: Class 'ProductPage_Image' not found in D:\...\sapphire\core\model\DataObject.php on line 1096

Why i get this error?

Have you tried entering the admin panel doing ?flush=1 at the end of the URL? Perhaps there is some caching somewhere.

eg. http://www.mysite.com/admin?flush=1

also, try: http://www.mysite.com/db/build?flush=1 in case there's something missing.

Hopefully that should shed some light on the situation.

Cheers,
Sean

The class ProductPage_Image *must* be in a file called ProductPage.php

If you want to put it into Producto.php, you should rename the class to Prodocto_Image. If you do this, remember to run db/build, and then edit the current images in the database, changing the File.ClassName field.

I will fix it and tell you the results.

Thanks.

And Great Work with this CMS, and tanks to open it to the community.

Works Perfect Thanks.