Issue: Post Comment Error

ErrorException: Fatal Error: Call to a member function queue() on a non-object - vault/core/model/email/xf.php:39
Generated By: lwinters630, Yesterday at 11:04 PM
Stack Trace
#0 [internal function]: XenForo_Application::handleFatalError()
#1 {main}
Request State
array(3) {
  ["url"] => string(79) "http://www.controlbooth.com/wiki/?title=platform&do=comments&action=postcomment"
  ["_GET"] => array(3) {
    ["title"] => string(8) "platform"
    ["do"] => string(8) "comments"
    ["action"] => string(11) "postcomment"
  }
  ["_POST"] => array(12) {
    ["quickreply_html"] => string(360) "<p>The
 video link to the Wiki platform uses many terms that do not match the 
items shown.&nbsp; For example he says "lags" or "lag bolts" which are by 
definition screws and generally not used to Bolt platforms together.&nbsp; He
 mentions particle board but actually shows OSB.&nbsp; It would be nice to 
have a more concise and accurate video.<br></p>"
    ["_xfRelativeResolver"] => string(60) "http://www.controlbooth.com/wiki/?title=platform&do=comments"
    ["do"] => string(8) "comments"
    ["action"] => string(11) "postcomment"
    ["fromquickreply"] => string(1) "1"
    ["discussionid"] => string(1) "1"
    ["last_date"] => string(0) ""
    ["last_known_date"] => string(0) ""
    ["_xfToken"] => string(8) "********"
    ["_xfRequestUri"] => string(33) "/wiki/?title=platform&do=comments"
    ["_xfNoRedirect"] => string(1) "1"
    ["_xfResponseType"] => string(4) "json"
  }
}