title: Maven error : Could not calculate build plan
body: <p>I am getting the following errors and i do not know why. I have set up my project on multiple environments and Ive never had any issue but recently i have added the project to an environment running Windows 8 with everything set up correctly (e.g. Maven... ) and i seem to be getting this issue</p>
  
  <pre><code>Multiple annotations found at this line:
      - Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (execution: default-compile, phase: compile)
      - Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:2.5.1:testCompile (execution: default-testCompile, phase: test-compile)
      - CoreException: Could not calculate build plan: Plugin org.apache.maven.plugins:maven-compiler-plugin:2.5.1 or one of its dependencies could not be resolved: Failed to read 
       artifact descriptor for org.apache.maven.plugins:maven-compiler-plugin:jar:2.5.1: ArtifactResolutionException: Could not transfer artifact org.apache.maven.plugins:maven-compiler-
       plugin:pom:2.5.1 from/to central (http://repo.maven.apache.org/maven2): Address family not supported by protocol family: connect
      - CoreException: Could not calculate build plan: Plugin org.apache.maven.plugins:maven-compiler-plugin:2.5.1 or one of its dependencies could not be resolved: Failed to read 
       artifact descriptor for org.apache.maven.plugins:maven-compiler-plugin:jar:2.5.1: ArtifactResolutionException: Failure to transfer org.apache.maven.plugins:maven-compiler-plugin:pom:2.5.1 
       from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. 
       Original error: Could not transfer artifact org.apache.maven.plugins:maven-compiler-plugin:pom:2.5.1 from/to central (http://repo.maven.apache.org/maven2): Address family not supported 
       by protocol family: connect
  </code></pre>
  
  <p>and </p>
  
  <pre><code>Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
  Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
  </code></pre>
  
  <p>I have looked at this online and have tried numerous different things listed below to try and resolve this issue but none of them seem to work. Just to note i am not using any proxies</p>
  
  <ul>
  <li>Delete .m2 repository, Maven -> Update Project...</li>
  <li>Delete all <code>.lastUpdated</code> files, Maven -> Update Project...</li>
  <li>Tried selecting "Force Update of Snapshots/Releases" when updating project</li>
  </ul>
  
  <p>Does anyone have any other ideas on what i could try?</p>