title: Maven child module not found when building
body: <p>I am trying to learn how maven multi-project builds work. I have a very simple setup right now, a top level POM that defines 1 subproject, the web application, and a web project that has a pretty basic pom file. From the parent level directory, when i try to run 'mvn clean install' i get the following error:</p>
  
  <pre><code>Child module /home/jeb/Desktop/payroll/payroll-web&gt; of /home/jeb/Desktop/payroll/pom.xml does not exist
  </code></pre>
  
  <p>Here is the parent pom:</p>
  
  <pre><code>&lt;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"&gt;
  
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  
      &lt;groupId&gt;payroll&lt;/groupId&gt;
      &lt;artifactId&gt;payroll-top&lt;/artifactId&gt;
      &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
  
      &lt;packaging&gt;pom&lt;/packaging&gt;
  
      &lt;modules&gt;
          &lt;module&gt;payroll-web&gt;&lt;/module&gt;
      &lt;/modules&gt;
  &lt;/project&gt;
  </code></pre>
  
  <p>And here is the subproject (web app) pom.xml</p>
  
  <pre><code>&lt;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"&gt;
  
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
      &lt;name&gt;payroll-web&lt;/name&gt;
  
      &lt;parent&gt;
          &lt;groupId&gt;payroll&lt;/groupId&gt;
          &lt;artifactId&gt;payroll-top&lt;/artifactId&gt;
          &lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt;
          &lt;relativePath&gt;../pom.xml&lt;/relativePath&gt;
      &lt;/parent&gt;
  
      &lt;groupId&gt;payroll&lt;/groupId&gt;
      &lt;artifactId&gt;payroll-web&lt;/artifactId&gt;
      &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
  
      &lt;packaging&gt;war&lt;/packaging&gt;
  
      &lt;dependencies&gt;
  
      &lt;/dependencies&gt;
  
      &lt;build&gt;
          &lt;finalName&gt;payrollwebapp&lt;/finalName&gt;
      &lt;/build&gt;
  &lt;/project&gt;
  </code></pre>
  
  <p>I'm not sure what I am missing to get the project to build, any help is appreciated.</p>