Dear Stephen,
next problem: I cannot navigate between months on the widget calendar .
My Page: http://www.esistliebe.com
I allready search for register_sidebar() in the function.php. But dont find the ‘before_widget’ part.
Do you have any ideas?

Manuel
Could you try adding the before_widget
and after_widget
arguments?
register_sidebar(array(
...
'before_widget' => '<div id="%1$s" class="widget %2$s">',
'after_widget' => '</div>',
));

Stephen Harris
Can only find this one:
/* ————————————————————————-*
* WIDGET COUNTER *
* ————————————————————————-*/
function widget_first_last_classes($params) {
global $my_widget_num; // Global a counter array
$this_id = $params[0]['id']; // Get the id for the current sidebar we're processing
$arr_registered_widgets = wp_get_sidebars_widgets(); // Get an array of ALL registered widgets
if(!$my_widget_num) {// If the counter array doesn't exist, create it
$my_widget_num = array();
}
if(!isset($arr_registered_widgets[$this_id]) || !is_array($arr_registered_widgets[$this_id])) { // Check if the current sidebar has no widgets
return $params; // No widgets in this sidebar... bail early.
}
if(isset($my_widget_num[$this_id])) { // See if the counter array has an entry for this sidebar
$my_widget_num[$this_id] ++;
} else { // If not, create it starting with 1
$my_widget_num[$this_id] = 1;
}
$class = 'class="widget-' . $my_widget_num[$this_id] . ' '; // Add a widget number class for additional styling options
if($my_widget_num[$this_id] == 1) { // If this is the first widget
$class .= 'first ';
} elseif($my_widget_num[$this_id] == count($arr_registered_widgets[$this_id])) { // If this is the last widget
$class .= 'last ';
}
$params[0]['before_widget'] = str_replace('class="', $class, $params[0]['before_widget']); // Insert our new classes into "before widget"
return $params;
}
in the other.php

Manuel
Is there no call to register_sidebar()
anywhere?
It looks like they are careful not to replace existing classes, so it must that when the theme calls register_sidebar()
it’s not passing %1$s
as the ID and %2$s
as a class (which it does do by default).
You could try setting the before_widget
attribute in that above code (and in the classes the theme is tring to add).

Stephen Harris