Issue: Edit Error

ErrorException: Undefined offset: 34 - vault/core/view/form/vw.php:337
Generated By: gafftaper, Today at 4:45 AM
Stack Trace
#0 /home/control/public_html/vault/core/view/form/vw.php(337): XenForo_Application::handlePhpError(8, 'Undefined offse...', '/home/control/p...', 337, Array)
#1 /home/control/public_html/vault/core/view/ui/edit/vw.php(221): vw_Form_View->prefix_mixed(34, 9548)
#2 /home/control/public_html/vault/core/view/ui/edit/vw.php(93): vw_UI_Edit_View->prefixoption(Array)
#3 /home/control/public_html/vault/core/controller/ui/edit/vw.php(653): vw_UI_Edit_View->edit(Object(vw_UI_Page_Controller))
#4 /home/control/public_html/vault/core/controller/ui/page/vw.php(289): vw_UI_Edit_Controller->edit(Object(vw_UI_Page_Controller))
#5 /home/control/public_html/vault/core/controller/ui/page/vw.php(55): vw_UI_Page_Controller->edit(false)
#6 /home/control/public_html/vault/core/controller/ui/stack/vw.php(154): vw_UI_Page_Controller->execute()
#7 /home/control/public_html/library/vw/XenForo/ControllerPublic/Wiki.php(68): vw_UI_Stack_Controller->execute()
#8 /home/control/public_html/library/XenForo/FrontController.php(337): vw_XenForo_ControllerPublic_Wiki->actionIndex()
#9 /home/control/public_html/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#10 /home/control/public_html/index.php(13): XenForo_FrontController->run()
#11 {main}
[B]Request State[/B]
array(3) {
  ["url"] => string(105) "http://www.controlbooth.com/wiki/?title=Collaborative-Articles:Dealers-for-Supplies-and-Equipment&do=edit"
  ["_GET"] => array(2) {
    ["title"] => string(57) "Collaborative-Articles:Dealers-for-Supplies-and-Equipment"
    ["do"] => string(4) "edit"
  }
  ["_POST"] => array(0) {
  }
}