soapUI 3.6.1 unix Error Illegal Character

HI everybody!!!!

I use soapUI unix version on AIX 5.3. It give me un error about a WSDL RESPONSE:

Status: FAILED
Time Taken: 1418
Size: 284
Timestamp: Thu May 26 12:06:08 CEST 2011
TestStep: Test Request1

----------------- Messages ------------------------------
[SOAP Response] error: Illegal XML character: 0x14
org.apache.xmlbeans.impl.piccolo.io.IllegalCharException: Illegal XML character: 0x14
at org.apache.xmlbeans.impl.piccolo.xml.XMLReaderReader.read(XMLReaderReader.java:169)
at org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.yy_refill(PiccoloLexer.java:3474)


I read on forum that the possible solution is to enable the flag of compression answer. In the request i read this:

---------------- Request ---------------------------
Request Headers: Content-Type : text/xml;charset=UTF-8
User-Agent : Jakarta Commons-HttpClient/3.1
SOAPAction : "document/http://siebel.com/ConsumerRelease/EAI/OperatorPermWS:WINOperatorPerm"
Accept-Encoding : gzip,deflate
Content-Length : 355
Host : icrm.wind.root.it:8080


<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:oper="http://siebel.com/ConsumerRelease/EAI/OperatorPermWS">
<soapenv:Header/>
<soapenv:Body>
<oper:WINOperatorPerm_Input>
<oper:Operator_code>VITTORIOSIA1</oper:Operator_code>
</oper:WINOperatorPerm_Input>
</soapenv:Body>
</soapenv:Envelope>

How can resolve the problem?

Tnx a lot,

quadrinho