SSO and programmatic authentication

On execution of:
request.login("user", "password");

I'm getting the following exception:
08:47:35,477 ERROR [io.undertow.request] (default task-3) UT005023: Exception handling request to /testproject/loginServlet: java.lang.IllegalArgumentException: No enum constant org.wildfly.clustering.web.sso.AuthenticationType.SSO
at java.lang.Enum.valueOf(Enum.java:236) [rt.jar:1.7.0_51]
at org.wildfly.clustering.web.sso.AuthenticationType.valueOf(AuthenticationType.java:28)
at org.wildfly.clustering.web.undertow.sso.DistributableSingleSignOnManager.createSingleSignOn(DistributableSingleSignOnManager.java:73)
at io.undertow.security.impl.SingleSignOnAuthenticationMechanism$ResponseListener.wrap(SingleSignOnAuthenticationMechanism.java:104) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.security.impl.SingleSignOnAuthenticationMechanism$ResponseListener.wrap(SingleSignOnAuthenticationMechanism.java:97) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.server.HttpServerExchange$WrapperStreamSinkConduitFactory.create(HttpServerExchange.java:1962) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.server.HttpServerExchange.getResponseChannel(HttpServerExchange.java:1126) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.spec.ServletOutputStreamImpl.writeBufferBlocking(ServletOutputStreamImpl.java:575) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.spec.ServletOutputStreamImpl.flushInternal(ServletOutputStreamImpl.java:495) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.spec.ServletOutputStreamImpl.flush(ServletOutputStreamImpl.java:482) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.spec.ServletPrintWriter.flush(ServletPrintWriter.java:32) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.spec.ServletPrintWriterDelegate.flush(ServletPrintWriterDelegate.java:76) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
at testproject.LoginServlet.doGet(LoginServlet.java:33) [classes:]
...