Maven classpath trouble with Maven-selenium plugin - maven

Question

We're using Maven 3.0.3 and using the Maven Selenium plugin to attempt to start a Selenium server. We have this dependency in our pom ...
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-server</artifactId>
<version>2.19.0</version>
<classifier>noexe</classifier>
</dependency>
Then in the pre-integration phase we try and start Selenium server ...
<build>
...
<plugins>
...
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>selenium-maven-plugin</artifactId>
<version>1.1</version>
<executions>
<execution>
<id>start</id>
<phase>pre-integration-test</phase>
<goals>
<goal>start-server</goal>
</goals>
<configuration>
<background>true</background>
<logOutput>true</logOutput>
</configuration>
</execution>
</executions>
</plugin>
But the server fails to start with the error ...
java.lang.NoClassDefFoundError: org/openqa/selenium/server/SeleniumServer
Caused by: java.lang.ClassNotFoundException: org.openqa.selenium.server.SeleniumServer
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: org.openqa.selenium.server.SeleniumServer. Program will exit.
Exception in thread "main"
I have verified that the dependency above contains the missing class. How else can I troubleshoot this classpath problem or can you tell what is wrong with the setup I've listed here?
Thanks, - Dave