PHP 5.3, data not stored

Ok, here is how i'm using this.

Node type A has a autocomplete field and a automatic node title which is set trough [field_activiteit_autocomplete-raw]. So it is set with the value that is set in the autocomplete. The autocomplete field is using the Autocomplete for allowed values list. Here's some more value from the autocomplete field:
Automatisch aanvullende overeenkomst:
Contains
Case sensitive:
Off
Allowed values, PHP code:

$matches = array();
	$count=0;
		$result = db_query_range("SELECT title FROM {node} n WHERE n.type ='activiteit'", $string, 0, 10);
		while ($data = db_fetch_object($result)) {
			$matches[$count] = check_plain($data->title);
			$key=$matches[$count];
			$results[$matches[$count]] = $key;
			$count++;
		}
return $results;

Then trough the http://drupal.org/project/node_widget module i automatically let users create an 'activiteit' node when they are adding a 'dagboek' node. (Diary and in every Diary you can add an activitie you did that day).

Ok, it seems the value is saved, but when editing the node the node title from the autocomplete fields is not shown.

This could mean that it has to do with node widget or automatic node title or this module.