Index: core/units/form_submissions/form_submissions_eh.php
===================================================================
--- core/units/form_submissions/form_submissions_eh.php	(revision 12858)
+++ core/units/form_submissions/form_submissions_eh.php	(working copy)
@@ -19,7 +19,7 @@
 		function CheckPermission(&$event)
 		{
 			if (!$this->Application->isAdmin) {
-				if ($event->Name == 'OnCreate') {
+				if ($event->Name == 'OnCreate' || $event->Name == 'OnItemBuild') {
 					// anybody can submit forms on front
 					return true;
 				}