title: Maven - issue running mvn help:effective-pom
body: <p>I am working through a basic Maven tutorial, and managed to create a simple archetype and run a mvn install.  However, when trying to do a mvn help:effective-pom, I just seem to get this output:</p>
  
  <blockquote>
    <p>mvn help:effective-pom [INFO] Scanning for projects... [INFO]<br>
    [INFO]
    ------------------------------------------------------------------------ [INFO] Building simple 1.0-SNAPSHOT [INFO]
    ------------------------------------------------------------------------ [INFO]  [INFO] --- maven-help-plugin:2.2:effective-pom (default-cli) @
    simple --- Downloading:
    <a href="http://repo1.maven.org/maven2/org/apache/maven/maven-plugin-parameter-documenter/2.2.1/maven-plugin-parameter-documenter-2.2.1.pom" rel="nofollow">http://repo1.maven.org/maven2/org/apache/maven/maven-plugin-parameter-documenter/2.2.1/maven-plugin-parameter-documenter-2.2.1.pom</a>
    Downloading:
    <a href="http://repo1.maven.org/maven2/org/apache/maven/maven-plugin-parameter-documenter/2.2.1/maven-plugin-parameter-documenter-2.2.1.pom" rel="nofollow">http://repo1.maven.org/maven2/org/apache/maven/maven-plugin-parameter-documenter/2.2.1/maven-plugin-parameter-documenter-2.2.1.pom</a>
    [INFO]
    ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO]
    ------------------------------------------------------------------------ [INFO] Total time: 0.925s [INFO] Finished at: Mon May 13 21:41:09 BST
    2013 [INFO] Final Memory: 9M/131M [INFO]
    ------------------------------------------------------------------------ [ERROR] Failed to execute goal
    org.apache.maven.plugins:maven-help-plugin:2.2:effective-pom
    (default-cli) on project simple: Execution default-cli of goal
    org.apache.maven.plugins:maven-help-plugin:2.2:effective-pom failed:
    Plugin org.apache.maven.plugins:maven-help-plugin:2.2 or one of its
    dependencies could not be resolved: Failed to collect dependencies for
    org.apache.maven.plugins:maven-help-plugin:jar:2.2 (): Failed to read
    artifact descriptor for
    org.apache.maven:maven-plugin-parameter-documenter:jar:2.2.1: Could
    not transfer artifact
    org.apache.maven:maven-plugin-parameter-documenter:pom:2.2.1 from/to
    central (<a href="http://repo1.maven.org/maven2" rel="nofollow">http://repo1.maven.org/maven2</a>): Access denied to:
    <a href="http://repo1.maven.org/maven2/org/apache/maven/maven-plugin-parameter-documenter/2.2.1/maven-plugin-parameter-documenter-2.2.1.pom" rel="nofollow">http://repo1.maven.org/maven2/org/apache/maven/maven-plugin-parameter-documenter/2.2.1/maven-plugin-parameter-documenter-2.2.1.pom</a>
    -> [Help 1] [ERROR]  [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using
    the -X switch to enable full debug logging. [ERROR]  [ERROR] For more
    information about the errors and possible solutions, please read the
    following articles: [ERROR] [Help 1]
    <a href="http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException" rel="nofollow">http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException</a></p>
  </blockquote>
  
  <p>not much hope for me if I cant get past "Hello World" example...any advice appreciated.</p>
  
  <p>Regards</p>
  
  <p>i</p>