title: Error 500 on Joomla 2.5.8 : JHtml: :jquery not supported. File not found
body: <p>I am using Joomla 2.5.8 . Actually after i install a new theme this error occurred "JHtml: :jquery not supported. File not found" . Since i am new on Joomla i was unable to figure out. I even tried out Joomla Jquery Library plugins but non helped. Please help me to sort it out.</p>
  
  <p><strong>This is the Debug info:</strong></p>
  
  <blockquote>
  <pre><code>1 JSite-&gt;render() JROOT/index.php:48
  2 JDocumentHTML-&gt;parse()  JROOT/includes/application.php:259
  3 JDocumentHTML-&gt;_fetchTemplate() JROOT/libraries/joomla/document/html/html.php:414
  4 JDocumentHTML-&gt;_loadTemplate()  JROOT/libraries/joomla/document/html/html.php:591
  5 require()   JROOT/libraries/joomla/document/html/html.php:531
  6 TemplateWarpHelper-&gt;render()    JROOT/templates/yoo_revista/index.php:19
  7 include()   JROOT/templates/yoo_revista/warp/helpers/template.php:49
  8 TemplateWarpHelper-&gt;render()    JROOT/templates/yoo_revista/layouts/template.php:17
  9 include()   JROOT/templates/yoo_revista/warp/helpers/template.php:49
  10 JHtml::_() JROOT/templates/yoo_revista/warp/systems/joomla/layouts/head.php:22
  11 JError::raiseError()   JROOT/libraries/joomla/html/html.php:123
  12 JError::raise()    JROOT/libraries/joomla/error/error.php:251
  </code></pre>
  </blockquote>