Index: lams_central/src/java/org/lamsfoundation/lams/web/HomeController.java
===================================================================
diff -u -r44f25ff763552baf103b1bb4ed7d1d2466a937dc -r587ed647f8d1a0410710ce167369607c1eb57c45
--- lams_central/src/java/org/lamsfoundation/lams/web/HomeController.java	(.../HomeController.java)	(revision 44f25ff763552baf103b1bb4ed7d1d2466a937dc)
+++ lams_central/src/java/org/lamsfoundation/lams/web/HomeController.java	(.../HomeController.java)	(revision 587ed647f8d1a0410710ce167369607c1eb57c45)
@@ -191,8 +191,7 @@
 	    serverURLContextPath = serverURLContextPath.startsWith("/") ? serverURLContextPath
 		    : "/" + serverURLContextPath;
 	    serverURLContextPath += serverURLContextPath.endsWith("/") ? "" : "/";
-	    applicationcontext.getServletContext().getContext(serverURLContextPath + "learning")
-		    .getRequestDispatcher("/welcome.jsp?lessonID=" + lessonId).forward(req, res);
+	    res.sendRedirect(serverURLContextPath + "learning/welcome.jsp?lessonID=" + lessonId);
 	    return null;
 
 	} catch (Exception e) {
@@ -293,7 +292,7 @@
 	// find lessons which can be set as preceding ones for newly created lesson
 	Organisation organisation = (Organisation) userManagementService.findById(Organisation.class, organisationID);
 	Set<LessonDTO> availableLessons = new TreeSet<>(new LessonDTOComparator());
-	for (Lesson availableLesson : (Set<Lesson>) organisation.getLessons()) {
+	for (Lesson availableLesson : organisation.getLessons()) {
 	    Integer availableLessonState = availableLesson.getLessonStateId();
 	    if (!Lesson.REMOVED_STATE.equals(availableLessonState)
 		    && !Lesson.FINISHED_STATE.equals(availableLessonState)) {
@@ -372,5 +371,5 @@
 
     private User getRealUser(UserDTO dto) {
 	return userManagementService.getUserByLogin(dto.getLogin());
-    } 
+    }
 }
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