T_DIR == $dir && ! $wp_filesystem->wp_content_dir() )
				return new WP_Error('fs_no_content_dir', $this->strings['fs_no_content_dir']);

			elseif ( WP_PLUGIN_DIR == $dir && ! $wp_filesystem->wp_plugins_dir() )
				return new WP_Error('fs_no_plugins_dir', $this->strings['fs_no_plugins_dir']);

			elseif ( WP_CONTENT_DIR . '/themes' == $dir && ! $wp_filesystem->find_folder(WP_CONTENT_DIR . '/themes') )
				return new WP_Error('fs_no_themes_dir', $this->strings['fs_no_themes_dir']);

			elseif ( ! $wp_filesystem->find_folder($dir) )
				return new WP_Error('fs_no_folder', sprintf($strings['fs_no_folder'], $dir));
		}
		return true;
	} //end fs_connect();

	function download_package($package) {

		if ( ! preg_match('!^(http|https|ftp)://!i', $package) && file_exists($package) ) //Local file or remote?
			return $package; //must be a local file..

		if ( empty($package) )
			return new WP_Error('no_package', $this->strings['no_package']);

		$this->skin->feedback('downloading_package', $package);

		$download_file = download_url($package);

		if ( is_wp_error($download_file) )
			return new WP_Error('download_failed', $this->strings['download_failed'], $download_file->get_error_message());

		return $download_file;
	}

	function unpack_package($package, $delete_package = true) {
		global $wp_filesystem;

		$this->skin->feedback('unpack_package');

		$upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/';

		//Clean up contents of upgrade directory beforehand.
		$upgrade_files = $wp_filesystem->dirlist($upgrade_folder);
		if ( !empty($upgrade_files) ) {
			foreach ( $upgrade_file<br />
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XML-RPC server accepts POST requests only.