title: Missing builder(org.maven.ide.eclipse.maven2Builder)
body: <p>I'm using Eclipse Indigo and have the following in my .project file:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; 
    &lt;projectDescription&gt; 
      &lt;name&gt;new project&lt;/name&gt; 
      &lt;buildSpec&gt; 
        &lt;buildCommand&gt; 
          &lt;name&gt;org.eclipse.jdt.core.javabuilder&lt;/name&gt; 
        &lt;/buildCommand&gt; 
        &lt;buildCommand&gt; 
          &lt;name&gt;org.maven.ide.eclipse.maven2Builder&lt;/name&gt; 
        &lt;/buildCommand&gt; 
      &lt;/buildSpec&gt;
      &lt;natures&gt; 
        &lt;nature&gt;org.eclipse.jdt.core.javanature&lt;/nature&gt;       
        &lt;nature&gt;org.maven.ide.eclipse.maven2Nature&lt;/nature&gt; 
      &lt;/natures&gt; 
    &lt;/projectDescription&gt;
  </code></pre>
  
  <p>I have the m2e - Maven Integration for Eclipse installed. But I am getting Missing builder(org.maven.ide.eclipse.maven2Builder) under the Builders properties and I am getting a java.lang.ClassNotFoundException: when I try to running a class file from my project.</p>
  
  <p>I guess I am missing something in the config somewhere or a plugin?</p>
  
  <p>Thanks</p>