Content is not allowed in prolog.

[sazkarcz]

Hi, I have problem with place a bet. I send xml:

<?xml version="1.0" encoding="UTF-8"?><postBetOrder xmlns="urn:betfair:games:api:v1" marketId="29970085" round="2" currency="EUR"><betPlace><bidType>BACK</bidType><price>1.49</price><size>4</size><selectionId>1032017</selectionId></betPlace></postBetOrder>

and get exception:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<?xml-stylesheet type="text/xsl" href="/rest/apiStylesheet.xsl" ?>
<error xmlns="urn:betfair:games:api:v1">
<errorCode>EXCEPTION</errorCode>
<credentialCheck>LOGIN_SUCCESS</credentialCheck>
<userStatus>ACTIVE</userStatus>
<errorDetails>Content is not allowed in prolog.</errorDetails>
</error>

Anybody know what is wrong? XML is created in PHP5.