I created a test environment, and I got it to work by removing the cache files then changing line 144 in twitterstatus.php to:
CURLOPT_URL => 'http://api.twitter.com/1/statuses/user_timeline.json?screen_name=' . $this->ID . '&count=' . $this->Count,
FWIW, Craig states on line 10 of that same file "This code can be used without any restrictions, but please don't expect support either!".