This is actually the part of code all around the problem

    function twitter_count($twitter_id, $widget_id, $clear_cache) {

    $twittercount = 0;

    if(get_option('twitter_count_' . $widget_id) == 0 || $clear_cache == 'on' || get_option('twitter_count_api_timer_' . $widget_id) < (time() - 1800)): 
        $followers = $this->curl("http://twitter.com/users/show.xml?screen_name=" . $twitter_id);
        try {
            if($followers):
                $xml = new SimpleXmlElement($followers, LIBXML_NOCDATA);
                if($xml):
                    if((string)$xml->followers_count):
                        $twittercount = (string)$xml->followers_count;
                    endif;
                    update_option('twitter_count_' . $widget_id, $twittercount);
                endif;
            endif;
        } catch(Exception $ex) {}
        update_option('twitter_count_api_timer_' . $widget_id, time());
    else:
        $twittercount = get_option('twitter_count_' . $widget_id);
    endif;

    return $twittercount;

}

I get this error : Parse error: syntax error, unpredicted 'wordpress-content/styles/StandardTheme_25/lib/followcount.php online 137

I take away the 'I can not decipher it.

Most likely you're utilizing an old version of PHP (e.g. PHP 4), which does not support try/catch yet. For PHP this is a T_STRING then a '{' and will also clearly yield a parse error.