Index: lams_common/src/java/org/lamsfoundation/lams/web/filter/AccessPermissionFilter.java
===================================================================
RCS file: /usr/local/cvsroot/lams_common/src/java/org/lamsfoundation/lams/web/filter/AccessPermissionFilter.java,v
diff -u -r1.1 -r1.2
--- lams_common/src/java/org/lamsfoundation/lams/web/filter/AccessPermissionFilter.java	3 Jan 2012 12:33:38 -0000	1.1
+++ lams_common/src/java/org/lamsfoundation/lams/web/filter/AccessPermissionFilter.java	3 Jan 2012 13:39:41 -0000	1.2
@@ -111,8 +111,7 @@
 		ToolSession toolSession = getLamsToolService().getToolSession(toolSessionID);
 		Lesson lesson = toolSession.getLesson();
 		User user = getUser();
-
-		if ((toolSession.getLearners() != null) && toolSession.getLearners().contains(user)) {
+		if ((lesson != null) && (lesson.getAllLearners() != null) && lesson.getAllLearners().contains(user)) {
 		    if (AccessPermissionFilter.log.isTraceEnabled()) {
 			AccessPermissionFilter.log.trace("OK, user "
 				+ user.getLogin()