Undefined offset: 1 backend.inc line 163

First I couldn't find where to submit this issue, but since it is when a site is being created I figured this is the right issue queue.

I currently have two aegir systems one acts as the master (so the front end and db) then I have another that is just a remote server with no front end.

I have successfully created a platform from my master to the remote server. However, when I go to create a site it fails and I get the following errors back.

1. Undefined offset: 1 backend.inc:163
2. Undefined variable: output backend.inc:170

By looking at the code from backend.inc (below) we can just ignore issue #2. It will be fixed when #1 is fixed. However, I'm having problems with following this code and how it could work because I do not see where $match[1] gets set.

I hope I've given enough information.

<?php
/**
 * Parse output returned from a Drush command.
 *
 * @param string
 *    The output of a drush command
 * @param integrate
 *    Integrate the errors and log messages from the command into the current process.
 *
 * @return
 *   An associative array containing the data from the external command, or the string parameter if it
 *   could not be parsed successfully.
 */
function drush_backend_parse_output($string, $integrate = TRUE) {
  $regex = sprintf(DRUSH_BACKEND_OUTPUT_DELIMITER, '(.*)');

  preg_match("/$regex/s", $string, $match);

  if ($match[1]) {
    // we have our JSON encoded string
    $output = $match[1];
    // remove the match we just made and any non printing characters
    $string = trim(str_replace(sprintf(DRUSH_BACKEND_OUTPUT_DELIMITER, $match[1]), '', $string));
  }

  if ($output) {
    $data = json_decode($output, TRUE);
    if (is_array($data)) {
      if ($integrate) {
        _drush_backend_integrate($data);
      }   
      return $data;
    }   
  }
  return $string;
}
?>

EDIT:: Added the php tags to get colored code.