Fix a bug in the code that checks for stale saved requests.

application/modules/courses/controllers/EditController.php

@@ -350,6 +350,10 @@ class Courses_EditController extends App_Controller_Action
     
     protected function _isSavedRequestStale(Requests_RequestModel $request, Courses_CourseModel $course)
     {
+        if (!$course->getCourseId()) {
+            return false;
+        }
+
         $parentCourse = Courses_CourseModel::findByCourseId($course->getCourseId());
         if ($parentCourse->getId() != $course->getParentId()) {
             return true;