Missing required argument 'module[s]' error

<?xml version="1.0" encoding="UTF-8"?>
<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/maven-v4_0_0.xsd">

<!-- POM file generated with GWT webAppCreator -->
<modelVersion>4.0.0</modelVersion>
<groupId>com.iip</groupId>
<artifactId>iip</artifactId>
<packaging>war</packaging>
<version>1.0</version>
<name>GWT Maven Archetype</name>

<properties>
<!-- Convenience property to set the GWT version -->
<gwtVersion>2.1.0</gwtVersion>
<!-- GWT needs at least java 1.5 -->
<maven.compiler.source>1.5</maven.compiler.source>
<maven.compiler.target>1.5</maven.compiler.target>
<webappDirectory>${project.build.directory}/${project.build.finalName}</webappDirectory>
</properties>

<dependencies>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-servlet</artifactId>
<version>2.3.0</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-user</artifactId>
<version>2.3.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
<scope>test</scope>
</dependency>
</dependencies>

<build>
<!-- Generate compiled stuff in the folder used for developing mode -->
<outputDirectory>${webappDirectory}/WEB-INF/classes</outputDirectory>

<plugins>

<!-- GWT Maven Plugin -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<version>2.3.0</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test</goal>
<goal>i18n</goal>
<goal>generateAsync</goal>
</goals>
</execution>
</executions>
<!-- Plugin configuration. There are many available options, see gwt-maven-plugin
documentation at codehaus.org -->
<configuration>
<runTarget>Iip.html</runTarget>
<hostedWebapp>${webappDirectory}</hostedWebapp>
<i18nMessagesBundle>war.client.Messages</i18nMessagesBundle>
</configuration>
</plugin>

<!-- Copy static web files before executing gwt:run -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>exploded</goal>
</goals>
</execution>
</executions>
<configuration>
<webappDirectory>${webappDirectory}</webappDirectory>
</configuration>
</plugin>

</plugins>
</build>

</project>
Hi all,

I follow instruction in this page (https://sites.google.com/site/jeenigxt/gwt-ext-maven-and-eclipse) to setup my first maven project for ext gwt. I got to the part called "Test So Far" and ran into this error when doing " Run As -> Web Application". I have been searching and trying different posts for couple of hours now without any progress. Attached is my pom.xml. Please help. Thanks.

Missing required argument 'module[s]'
Google Web Toolkit 2.2.0
DevMode [-noserver] [-port port-number | "auto"] [-whitelist whitelist-string] [-blacklist blacklist-string] [-logdir directory] [-logLevel level] [-gen dir] [-bindAddress host-name-or-address] [-codeServerPort port-number | "auto"] [-server servletContainerLauncher[:args]] [-startupUrl url] [-war dir] [-deploy dir] [-extra dir] [-workDir dir] module[s]

where
 -noserver        Prevents the embedded web server from running
 -port            Specifies the TCP port for the embedded web server (defaults to 8888)
...
and
 module[s]        Specifies the name(s) of the module(s) to host

Here is what appears in "Program arguments" text box of "Arguments" tab of "Run Configuration" window:
-war C:\Users\phamtranquocviet\Downloads\iip\target\iip-1.0 -remoteUI "${gwt_remote_ui_server_port}:${unique_id}" -startupUrl Iip.html -logLevel INFO -codeServerPort 9997 -port 8888

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