title: YAML Error: Inconsistent indentation level
body: <p>I'm using the Perl YAML module, and I kept getting the error message:</p>
  
  <pre><code>YAML Error: Inconsistent indentation level
     Code: YAML_PARSE_ERR_INCONSISTENT_INDENTATION
     Line: 2
     Document: 1
   at /usr/local/lib/perl5/site_perl/5.8.9/YAML.pm line 36
  </code></pre>
  
  <p>In my Perl code, I did <code>my $config = YAML::LoadFile("files.yaml");</code></p>
  
  <p>and here is the content of the files.yaml file: </p>
  
  <pre><code>--- #input files to be processed  
  files: all my files  
      - file1  
      - file2  
      - file3  
      - file4  
      - file5  
  </code></pre>
  
  <p>It seems to me that it's correctly formatted. Any ideas why I'm getting this error? Thanks a lot.</p>