It would be a lot easier to diagnose the problem if you posted the contents of the ALMVTC.WSDL file. That basically describes what the request and response should look like.
It would also help if you intercepted a successful request/response pair (from the VB Script you posted) with Apache TCPMon and posted the contents here - this is necessary in case the WSDL doesn't tell the whole story and some XML gets stuffed in a "string".
XML is case-sensitive. The WSDL specified "getVersion", not "GetVersion".
At the risk of repeating myself - it is usually far more productive to look at the raw HTTP/SOAP request/responses captured with TCPMon (Tutorial) than looking at gyrations of Java code and Stack traces.