SOAP Request causes Access violation

Hello community

I'm trying to get the SOAP-Webservice in CRM to work but i get always an access violation error.

this is how the request looks like...

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POST /crm/eware.dll/webservices/SOAP HTTP/1.1
Accept-Encoding: identity
Host: crmserver
Content-Length: 502
Content-Type: text/xml; charset="utf-8"
SOAPAction: ""


<SOAP-ENV:Envelope
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:ZSI="http://www.zolera.com/schemas/ZSI/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><SOAP-ENV:Header></SOAP-ENV:Header><SOAP-ENV:Body
xmlns:ns1="http://tempuri.org/type"><ns1:logon><ns1:username>admin</ns1:username><ns1:password>password</ns1:password></ns1:logon></SOAP-ENV:Body></SOAP-ENV:Envelope>
#############################################

This is the anwer :

HTTP/1.1 200 OK
Connection: close
Date: Tue, 06 Aug 2013 10:41:33 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
Expires: Mon, 05 Aug 2013 12:41:33 GMT
Content-Type: text/xml; charset=utf-8

<?xml version="1.0" encoding="UTF-8"
standalone="no"?><SOAP-ENV:Envelope
SOAP-ENV:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><SOAP-ENV:Body><SOAP-ENV:Fault><faultcode>SOAP-ENV:Server</faultcode><faultstring>Access
violation at address 1A1190A8 in module &apos;eware.dll&apos;. Read of address 00000014</faultstring></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope>

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Does somebody has an idea what causes this error?

regards

Oliver Jansen

edit: i forgot to tell the script is written in phyton