A calendar for each organic group

Hi!
I want to create a view with a calendar for each organic group, but somehow my arguments (and breadcrumbs) are not correct and I can't find a solution.

The view is almost working but if I press 'Year' at the top I get: url/group_calendar/2009/2009 and 'Month' I get: url//group_calendar/2009/2009/06
If i manually edit the link to url//group_calendar/2009 or url//group_calendar/2009/06 everything looks fine!

What am I doing wrong?
Thanks!

Here is my view:

$view = new stdClass();
$view->name = 'calendar_group';
$view->description = 'Calendar view - modified to work on each group.';
$view->access = array (
);
$view->view_args_php = '';
$view->page = TRUE;
$view->page_title = 'Group Calendar';
$view->page_header = '';
$view->page_header_format = '1';
$view->page_footer = '';
$view->page_footer_format = '1';
$view->page_empty = '';
$view->page_empty_format = '1';
$view->page_type = 'calendar';
$view->url = 'node/$group/group_calendar';
$view->use_pager = FALSE;
$view->nodes_per_page = '0';
$view->block = TRUE;
$view->block_title = 'Group Calendar';
$view->block_header = '';
$view->block_header_format = '1';
$view->block_footer = '';
$view->block_footer_format = '1';
$view->block_empty = '';
$view->block_empty_format = '1';
$view->block_type = 'table';
$view->nodes_per_block = '999';
$view->block_more = TRUE;
$view->block_use_page_header = FALSE;
$view->block_use_page_footer = FALSE;
$view->block_use_page_empty = FALSE;
$view->sort = array (
);
$view->argument = array (
array (
'type' => 'gid',
'argdefault' => '1',
'title' => '',
'options' => '',
'wildcard' => '',
'wildcard_substitution' => '',
),
array (
'type' => 'calendar_year',
'argdefault' => '2',
'title' => '%1',
'options' => '',
'wildcard' => '',
'wildcard_substitution' => '',
),
array (
'type' => 'calendar_month',
'argdefault' => '2',
'title' => '%2',
'options' => '',
'wildcard' => '',
'wildcard_substitution' => '',
),
array (
'type' => 'calendar_day',
'argdefault' => '2',
'title' => '%3',
'options' => '',
'wildcard' => '',
'wildcard_substitution' => '',
),
);
$view->field = array (
array (
'tablename' => 'node',
'field' => 'title',
'label' => 'Title:',
'handler' => 'views_handler_field_nodelink',
'options' => 'link',
),
array (
'tablename' => 'node_data_field_time',
'field' => 'field_time_value',
'label' => 'Time:',
'handler' => 'date_views_field_handler_ungroup',
'options' => 'default',
),
);
$view->filter = array (
array (
'tablename' => 'node',
'field' => 'status',
'operator' => '=',
'options' => '',
'value' => '1',
),
array (
'tablename' => 'node',
'field' => 'type',
'operator' => 'OR',
'options' => '',
'value' => array (
0 => 'calendar_event',
),
),
array (
'tablename' => 'og_ancestry',
'field' => 'picg',
'operator' => '=',
'options' => '',
'value' => '***CURRENT_GID***',
),
);
$view->exposed_filter = array (
);
$view->requires = array(node, node_data_field_time, og_ancestry);
$views[$view->name] = $view;