keine Group in Views 2 mit hook_views_data

Hi

Ich bin ziemlich neu hier und hoffe ihr könnt mir einen Tip geben. Ich möchte meinen Kontent mit Views 2 anzeigen. Habe schon alles mögliche versucht einschließlich ein Beispiel aus einem alten Beitrag (http://www.drupalcenter.de/node/18936): Aber ich bekomme in Views-Edit-Fields-Groups einfach keine Gruppe angezeigt und in der Liste sind meine Felder auch nicht.

Hier ist mein Code:
function imageroom_views_data()
{
drupal_set_message("imageroom_views_data2 called");
$data = array();
$data['imageroom']['table'] = array
( 'group' => t('Example'),
'base' => array
(
'field' => 'nid',
'title' => t('Example table'),
'help' => t("Example table contains example content and can be related to nodes."),
'weight' => -10,
),
);
$data['imageroom']['vid'] = array
( 'title' => t('File Name'),
'help' => t('Some example content that references a node.'),
'field' => array('handler' => 'views_handler_field_numeric','click sortable' => TRUE,),
'filter' => array('handler' => 'views_handler_filter_numeric',),
'sort' => array('handler' => 'views_handler_sort',),
);
$data['imageroom']['nid'] = array
( 'title' => t('File Name'),
'help' => t('Some example content that references a node.'),
'field' => array('handler' => 'views_handler_field_numeric','click sortable' => TRUE,),
'filter' => array('handler' => 'views_handler_filter_numeric',),
'sort' => array('handler' => 'views_handler_sort',),
);
$data['imageroom']['filename'] = array
( 'title' => t('File Name'),
'help' => t('Some example content that references a node.'),
'field' => array('handler' => 'views_handler_field','click sortable' => TRUE,),
'sort' => array('handler' => 'views_handler_sort',),
'filter' => array('handler' => 'views_handler_filter_string',),
'argument' => array('handler' => 'views_handler_argument_string',),
);
$data['imageroom']['path'] = array
( 'title' => t('File Name'),
'help' => t('Some example content that references a node.'),
'field' => array('handler' => 'views_handler_field','click sortable' => TRUE,),
'sort' => array('handler' => 'views_handler_sort',),
'filter' => array('handler' => 'views_handler_filter_string',),
'argument' => array('handler' => 'views_handler_argument_string',),
);
return $data;
}

function imageroom_schema()
{ $schema['imageroom'] = array
( 'fields' => array
( 'vid' => array
( 'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'defaulte' => 0,
),
'nid' => array
( 'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'defaulte' => 0,
),
'filename' => array
( 'type' => 'varchar',
'length' => 30,
'default' => '',
),
'path' => array
( 'type' => 'varchar',
'length' => 60,
'default' => '',
),
),
'indexes' => array('nid' => array('nid'),),
'primary key' => array('vid'),
);