in my _config:    DataObject::add_extension('HomePage', 'LogoDecorator');

<?php

class LogoDecorator extends DataObjectDecorator{

   function extraStatics() {
      return array(
         'has_many' => array(
            'Logos' => 'Logo',
         ),
      );
   }

   public function updateCMSFields(FieldSet &$fields) {
      $Banners = new ComplexTableField(
            $this,
            'Logos',
            'Logo',
            array(
               'TextoAlternativo' =>'TextoAlternativo',
               'Link' =>'Link'
            ),
            'getCMSFields_forPopup'
      );
      $Banners->setParentClass('HomePage');   
      $fields->addFieldToTab( 'Root.Content.Logos', $Banners );      
   }   
}

<?php

class Logo extends DataObject {

   static $db = array (
      'TextoAlternativo' => 'Varchar(140)',
      'Link' => 'Varchar(255)'
   );
   
   static $has_one = array (
      'HomePage' => 'HomePage',
      'Logo' => 'Image'
   );      
   public function getCMSFields_forPopup()
   {
      return new FieldSet(
         new TextareaField('TextoAlternativo', 'Texto Alternativo (para google) - máximo 140 caracteres'),
         new TextField("Link", "URL de la página de logo (sin http://)"),
         new ImageField('Logo', 'Agregar imagen para el banner')
      );
   }   
}

La página en http://sta dice:ERROR [Notice]: Undefined property: LogoDecorator::$ID
IN POST /admin/getitem?ID=5&ajax=1
Line 211 in /Users/francisco/Sites/stachile/dataobject_manager/code/DataObjectManager.php

Source
======
202:       $sort     = isset($params['sort'])? $params['sort']        :    $this->sort;
203:       $sort_dir = isset($params['sort_dir'])? $params['sort_dir'] :    $this->sort_dir;
204:       $filter = isset($params['filter'])? $params['filter']     :    $this->filter;
205:       $search = isset($params['search'])? $params['search']     :    $this->search;
206:       return
"ctf[{$this->Name()}][start]={$start}&ctf[{$this->Name()}][per_page]={$per_page}&ctf[{$this->Name()}][showall]={$show_all}&ctf[{$this->Name()}][sort]={$sort}&ctf[{$this->Name()}][sort_dir]={$sort_dir}&ctf[{$this->Name()}][search]={$search}&ctf[{$this->Name()}][filter]={$filter}";
207:    }
208:    
209:    function FieldHolder()
210:    {
* 211:       if(!$this->controller->ID && $this->isNested)
212:          return $this->renderWith('DataObjectManager_holder');
213:       return parent::FieldHolder();
214:    }
215:
216:    
217:    public function Headings()

<ul>DataObjectManager->FieldHolder()

call_user_func_array(Array,Array)
line 408 of ViewableData.php

ViewableData->XML_val(FieldHolder,,1)
line 74 of .cache.Users.francisco.Sites.stachile.sapphire.templates.TabSetFieldHolder.ss

include(/private/var/tmp/silverstripe-cache-Users-francisco-Sites-stachile/.cache.Users.francisco.Sites.stachile.sapphire.templates.TabSetFieldHolder.ss)
line 354 of SSViewer.php

SSViewer->process(TabSet)
line 773 of ViewableData.php

ViewableData->renderWith(TabSetFieldHolder)
line 62 of TabSet.php

TabSet->FieldHolder()

call_user_func_array(Array,Array)
line 408 of ViewableData.php

ViewableData->XML_val(FieldHolder,,1)
line 59 of .cache.Users.francisco.Sites.stachile.sapphire.templates.TabSetFieldHolder.ss

include(/private/var/tmp/silverstripe-cache-Users-francisco-Sites-stachile/.cache.Users.francisco.Sites.stachile.sapphire.templates.TabSetFieldHolder.ss)
line 354 of SSViewer.php

SSViewer->process(TabSet)
line 773 of ViewableData.php

ViewableData->renderWith(TabSetFieldHolder)
line 62 of TabSet.php

TabSet->FieldHolder()

call_user_func_array(Array,Array)
line 408 of ViewableData.php

ViewableData->XML_val(FieldHolder,,1)
line 70 of .cache.Users.francisco.Sites.stachile.sapphire.templates.Includes.Form.ss

include(/private/var/tmp/silverstripe-cache-Users-francisco-Sites-stachile/.cache.Users.francisco.Sites.stachile.sapphire.templates.Includes.Form.ss)
line 354 of SSViewer.php

SSViewer->process(Form)
line 773 of ViewableData.php

ViewableData->renderWith(Array)
line 982 of Form.php

Form->forTemplate()
line 1005 of Form.php

Form->formHtmlContent()
line 381 of LeftAndMain.php

LeftAndMain->getitem(HTTPRequest)
line 162 of Controller.php

Controller->handleAction(HTTPRequest)
line 129 of RequestHandler.php

RequestHandler->handleRequest(HTTPRequest)
line 122 of Controller.php

Controller->handleRequest(HTTPRequest)
line 277 of Director.php

Director::handleRequest(HTTPRequest,Session)
line 121 of Director.php

Director::direct(/admin/getitem)
line 118 of main.php

</ul>