Problem with loading xml data

Hi,

within a helper class I would like to call this xml

App::uses('Xml', 'Utility');

App::uses('AppHelper', 'View/Helper');

class SuggestHelper extends AppHelper {

function suggest($keyword){

   $keyword = urlencode(trim($keyword));

   $xml = Xml::build($this->feed_url.$keyword);

   $parsed_xml = Set::reverse($xml);

But I am always getting this error as soon as I search for more than 2 words, or of the keywords contains any strange letters like german umlauts

parser error : Input is not proper UTF-8, indicate encoding !

Cake is already uft-8. So what do I have to do?

When I call 2 or more words, they are like this: 'word1+word2' => that should be ok, or not?

IF I call the URL directly in the browser it returns me the correct XML without any error messages..

anyone any ideas for me?

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