null/empty response in maven-soapui-plugin

hi,

my test suite is working fine in soapUI application, but running the same test from maven (maven-soapui-plugin, 4.0.2-SNAPSHOT, 4.0.1) I have following error:

[Schema Compliance] null/empty response
[Not SOAP Fault] null/empty response

----------------- Messages ------------------------------
[SOAP Response] null/empty response
[Schema Compliance] null/empty response
[Not SOAP Fault] null/empty response
[Contains] null/empty response

---------------- Response --------------------------
Response Headers: Date : Tue, 21 Feb 2012 15:26:17 GMT
#status# : HTTP/1.1 200 OK
Content-Length : 0
Content-Type : text/html; charset=UTF-8
Connection : close
X-Powered-By : Servlet/2.5 JSP/2.1
Server : Apache/2.2.3 (Oracle)

is this a bug?