title: initdb: initializing pg_authid ... FATAL: wrong number of index expressions
body: <p>I'm new to PostgreSql.I'm trying to install PostgreSql in my system.My operating System is  Ubuntu,Below posted is my error</p>
  
  <p>The database cluster will be initialized with locale en_US.UTF-8.
  The default database encoding has accordingly been set to UTF8.</p>
  
  <pre><code>creating directory p01/pgsql/data ... ok
  creating subdirectories ... ok
  selecting default max_connections ... 100
  selecting default shared_buffers/max_fsm_pages ... 24MB/153600
  creating configuration files ... ok
  creating template1 database in p01/pgsql/data/base/1 ... ok
  initializing pg_authid ... FATAL:  wrong number of index expressions
  STATEMENT:  CREATE TRIGGER pg_sync_pg_database   AFTER INSERT OR UPDATE OR DELETE ON   
  
  pg_database   FOR EACH STATEMENT EXECUTE PROCEDURE flatfile_update_trigger();
  
  child process exited with exit code 1
  initdb: removing data directory "p01/pgsql/data"
  </code></pre>
  
  <p>Help me out!!
   Thanks!</p>