title: Path must include project and resource name / error
body: <p>I have checked out a maven project in eclipse using the option:</p>
  
  <pre><code>Import &gt; Maven &gt; Check out Maven Projects from SCM
  </code></pre>
  
  <p>When I try to build the project using:</p>
  
  <pre><code>Project &gt; Clean
  </code></pre>
  
  <p>I get the following errors:</p>
  
  <pre><code>Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
  </code></pre>
  
  <p>Stack trace:</p>
  
  <pre><code>java.lang.IllegalArgumentException: Path must include project and resource name: /
      at org.eclipse.core.runtime.Assert.isLegal(Assert.java:63)
      at org.eclipse.core.internal.resources.Workspace.newResource(Workspace.java:2163)
      at org.eclipse.core.internal.resources.Container.getFolder(Container.java:222)
      at org.sonatype.m2e.mavenarchiver.internal.AbstractMavenArchiverConfigurator.mavenProjectChanged(AbstractMavenArchiverConfigurator.java:178)
      at org.sonatype.m2e.mavenarchiver.internal.AbstractMavenArchiverConfigurator.mavenProjectChanged(AbstractMavenArchiverConfigurator.java:170)
      at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.mavenProjectChanged(ProjectConfigurationManager.java:905)
      at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.notifyProjectChangeListeners(ProjectRegistryManager.java:732)
      at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.applyMutableProjectRegistry(ProjectRegistryManager.java:855)
      at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:279)
      at org.eclipse.m2e.core.internal.project.registry.MavenProjectManager.refresh(MavenProjectManager.java:58)
      at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:87)
      at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:726)
      at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
      at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
      at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
      at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
      at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
      at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
      at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
      at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
      at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
      at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
      at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
  </code></pre>
  
  <p>Session Data:</p>
  
  <pre><code>eclipse.buildId=M20130204-1200
  java.version=1.7.0_17
  java.vendor=Oracle Corporation
  BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
  Framework arguments:  -product org.eclipse.epp.package.java.product
  Command-line arguments:  -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.java.product
  </code></pre>
  
  <p>I can't see any problems with the configuration. Other people have checked out this project without this error. I don't know what it is referring to when it says 'Path must include...' where can I configure this path?</p>