OW2 Programming Contest 2012

Failed to render content. Cause: [Can't find descriptor for the component with type [interface org.xwiki.rendering.parser.Parser] and hint [xwiki/1.0]]. Click on this message for details.
Failed to render content. Cause: [Can't find descriptor for the component with type [interface org.xwiki.rendering.parser.Parser] and hint [xwiki/1.0]]. Click on this message for details.