CompGO David Registration unsuccessful

Hi,

I am trying to use the R package CompGO to analyse several GO enrichment list together.
But even if I have registered on DAVID, the R command is giving me the following error

> david = DAVIDWebService$new(email = "bg93@nyu.edu")
[INFO] Unable to sendViaPost to url[http://david.abcc.ncifcrf.gov/webservice/services/DAVIDWebService.DAVIDWebServiceHttpSoap12Endpoint/]
org.apache.axis2.AxisFault: Transport error: 301 Error: Moved Permanently
at org.apache.axis2.transport.http.HTTPSender.handleResponse(HTTPSender.java:310)
at org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:200)
at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:76)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:400)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:225)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:435)
at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:402)
at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
at sample.session.client.stub.DAVIDWebServiceStub.authenticate(DAVIDWebServiceStub.java:2288)
Error in .jcall(stub, "S", "authenticate", email) :
org.apache.axis2.AxisFault: Transport error: 301 Error: Moved Permanently

does any user had got the same issue ?

Thanks