thanks a lot for your plugin!
I just updated to the new version (2.0.1) and now noticed in my log:
HP Warning: curl_setopt(): CURLOPT_FOLLOWLOCATION cannot be activated when safe_mode is enabled or an open_basedir is set in [...]/wp-content/plugins/wordpress-https/wordpress-https.php on line 533
I'm not sure if that was there before the update.
Can you implement a check that only sets CURLOPT_FOLLOWLOCATION to true when safemode is off?