[iPhone] Can not parse simple XML

Hi!
I have a simple XML

<?xml version="1.0" encoding="utf-8"?><errorCode>2</errorCode><error>Invalid username</error>

and I want to parse it in my app.
First I tried touchXML, but it returned error

Entity: line 1: parser error : Extra content at the end of the document
<?xml version="1.0" encoding="utf-8"?><errorCode>2</errorCode><error>Invalid use
 ^

Dont know what it means. Googling for that error did not helped.
So I tried NSXMLParser and got error too

Parsing error: Operation could not be completed. (NSXMLParserErrorDomain error 5.)
parsing ended

error number 5 means

NSXMLParserPrematureDocumentEndError
The document ended unexpectedly.

accordinc to docs.
But I really dont understand where is error in such a simple XML! Also W3C online validar told me that XML is valid

docElt: {None}errorCode
No declaration for document root found, validation was lax
The schema(s) used for schema-validation had no errors
No schema-validity problems were found in the target

So where is error in that XML?