Getting VM list from vCenter in Java Service backend

Hi,


I create a plugin to get the list of VM from vCenter. What I did is to create Proxy interface from the Flex server and use the Java Service Backend to connect to vCenter to get the VM list.


If I execute the code at the initial, I could get the list of VM.


However, when I execute the same code at the proxy function in the java service. I get the following error:


exception javax.xml.stream.xmloutputfactory cannot be created


It happens for the following call


RetrieveResult restriveResult = vimPort.retrievePropertiesEx(propCol, propertfyFilterSpec, rOptions);


Thanks,