WAR mock endpoint not same as SOAPUI

Hello all,

I have a webservice (domainname:port/Mywebservice) for which I am building a mock service with the particularity that the end point needs to look like this:

domainname:port/mock/Mywebservice.

When created and started in SOAP UI, this mock service works great so I have no issues at this point. It is when I deploy as a WAR file, and deploy the latter on Tomcat that the service gets loaded as:

localhost:port/Mywebservice.

When trying to hit the service with SOAP UI, I get a 404 error and when accessing the service from Tomcat's admin, I get an error 500 with the following stack

Error instantiating servlet class com.eviware.soapui.mockaswar.MockAsWarProServlet javax.servlet.ServletException: Error instantiating servlet class com.eviware.soapui.mockaswar.MockAsWarProServlet org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:409) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1044) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313) java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) java.lang.Thread.run(Unknown Source)

In the "Deploy As War" popup:

I select "Include External Jar files" and "Check to Enable WebUI"
In the MockService Endpoint, I enter /mock/Mywebservice
The WAR file and the War Directory are respectively C:\Mywebservice.war and C:\Mywebservice

I am using SoapUI 4.6.4 Pro on Windows 7 64bit.

Any suggestions?

Thanks

Nic