Web Services Explorer Authentication

[wmsigep]

I'm using the Web Services Explorer plugin to test a web service on a server the requires authentication. When I open a WSDL url, I am correctly prompted with a username/password login prompt that I can then use to provide my credentials. Once I've provided my credentials, the server correctly provides the WSDL document. When I attempt to actually invoke one of the services defined by the WSDL, however, I receive the following error message in the status pane:

"IWAB0135E An unexpected error has occurred.
java.net.SocketException
Software caused connection abort: recv failed"

After hours of testing and restarting eclipse, I did, in fact, receive a prompt to log in one time. The login dialog box was different, however -- it appeared to be using the UI style of my OS (Windows XP). At that point, the services on that WSDL node worked -- but I have not been able to trigger another login or successfully consume any other services that require authentication.

I have also been trying the soapUI tool and I found that there are properties that you can configure your username and password to automatically be included in the http request header. I am unable to find a similar configuration opportunity on the Web Services Explorer.

Any help would be greatly appreciated!