EJB3 profile needs EJB Timer Service

When I try to run the timer tutorial against the installer's ejb3 profile, the test fails with a NullPointerException

Steps to repro:

1. run the installer, and select the ejb3 profile
2. run the ejb3 timer tutorial against this server

The test will fail and you will receive the following in the server.log:

17:12:45,785 INFO [STDOUT] java.lang.NullPointerException
17:12:45,785 INFO [STDOUT] at org.jboss.tutorial.timer.bean.ExampleTimerBean.scheduleTimer(ExampleTimerBean.java:25)
17:12:45,785 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
17:12:45,785 INFO [STDOUT] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
17:12:45,785 INFO [STDOUT] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
17:12:45,785 INFO [STDOUT] at java.lang.reflect.Method.invoke(Method.java:585)
17:12:45,785 INFO [STDOUT] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:99)

Running this tutorial against the "all" profile does not produce these errors.