[Zarxrax]

This plugin has a bug in the way it stores the cookie. I don't know enough about the code to be able to fix it, but I found out what is causing the problem.

If you allow the plugin to show the setting to the user, then some users will have a problem where the page wont properly load (the error message in my previous post)
I'm not sure why it only effects some users, but I noticed that the problem didn't effect me. However, one day, without having made any changes to my forum, the problem started effecting me as well.

But anyways, I tried taking out the part of the code that sets the cookie. After I did that, it started working again (but obviously you can't change the setting).

This is the code I removed, so I guess something in this is causing the problem:

if ($foruminfo['forumid'] AND $foruminfo['fct_allow_user_set'])
{
  // try to get saved state
  if ($vbulletin->userinfo['userid'] > 0)
  {
    // is state saved by user
    $fct_state_saved =
      array_key_exists("$foruminfo[forumid]", $vbulletin->userinfo['fct_data'])
        ? true
        : false;

    // get saved or default value
    $filterclosedthreads =
      $fct_state_saved
        // saved state
        ? $vbulletin->userinfo['fct_data']["$foruminfo[forumid]"]
        // default state
        : $foruminfo['fct_hide_by_default'];

    unset($fct_state_saved);
  }

  if (!empty($vbulletin->GPC['closed']))
  {
    $fct_temp_state =
      $vbulletin->GPC['closed'] == 'hide'
        ? 1
        : 0;

    if ($fct_temp_state != $filterclosedthreads)
    {
      global $usercache;

      // update saved state
      $filterclosedthreads = $fct_temp_state;

      if ($vbulletin->userinfo['userid'] > 0)
      {
        $fct_userid = $vbulletin->userinfo['userid'];

        // update cache
        if(isset($usercache["$fct_userid"]))
        {
          $usercache["$fct_userid"]['fct_data']["$foruminfo[forumid]"] =
            $filterclosedthreads;
        }

        // update user profile
        $vbulletin->userinfo['fct_data']["$foruminfo[forumid]"] =
          $filterclosedthreads;

        // init user data manager
        $fct_userdata =& datamanager_init('User', $vbulletin, ERRTYPE_STANDARD);
        $fct_userdata->set_existing($vbulletin->userinfo);
        $fct_userdata->save();

        unset($fct_userdata, $fct_userid);
      }
    }

    unset($fct_temp_state);
  }
}