Plugin 'eviware:maven-soapui-pro-plugin' does not exist

Apologies for not posting this in the Pro section (assuming there is a difference between the free and pro plugins?), but I started this account before getting pro and need to get support to let me post in the Pro section.

I've played with a lot of different things in my POM, but I can't get maven to find the right plugin. I'm not sure if I'm hitting the wrong repository location or what. Everything I try just gives me the message:

org.apache.maven.lifecycle.LifecycleExecutionException: The plugin 'eviware:maven-soapui-pro-plugin' does not exist or no valid version could be found.

Any suggestions are very welcome, and I will most definitely post back with any negative or positive results.

Here is my POM:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>QA</groupId>
<artifactId>soapUITesting</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>

<name>soapUITesting</name>
<url>http://maven.apache.org</url>

<pluginRepositories>
<pluginRepository>
<id>eviwarePluginRepository</id>
<url>http://www.eviware.com/repository/maven2/</url>
</pluginRepository>
</pluginRepositories>
<build>
<plugins>
<plugin>
<groupId>eviware</groupId>
<artifactId>maven-soapui-pro-plugin</artifactId>
<version>4.0.0</version>
<executions>
<execution>
<phase>test</phase>
<goals>
<goal>test</goal>
</goals>
<configuration>
<projectFile>src/test/resources/DirectTestingTestNew.xml</projectFile>
<soapuiProperties>
<property>
<name>soapui.logroot</name>
<value>${project.build.directory}/soapui-logs/</value>
</property>
</soapuiProperties>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>