diff --git a/src/components/AdminDashboard.tsx b/src/components/AdminDashboard.tsx
index fea8de6..e80d7d0 100644
--- a/src/components/AdminDashboard.tsx
+++ b/src/components/AdminDashboard.tsx
@@ -1560,7 +1560,7 @@ export default function AdminDashboard({ token, adminUser, onLogout }: AdminDash
                 const isUnlocked = !course.isLocked || selectedStudentDetails.unlockedCourses?.includes(course.id);
                 if (!isUnlocked) return null;
 
-                const courseLessons = course.modules.flatMap(m => m.lessons) || [];
+                const courseLessons = course.modules?.flatMap(m => m.lessons) || [];
                 const studentReactions = selectedStudentDetails.lessonReactions || [];
                 const studentProgress = selectedStudentDetails.progress || [];
 
diff --git a/src/components/CourseView.tsx b/src/components/CourseView.tsx
index 242ee53..30e17ea 100644
--- a/src/components/CourseView.tsx
+++ b/src/components/CourseView.tsx
@@ -157,6 +157,7 @@ export default function CourseView({ courseId, token, onBack, initialLessonId }:
             })
           };
         }));
+        setActiveLesson(prev => prev ? { ...prev, reaction: type } : null);
       }
     } catch (err) {
       console.error('Error saving reaction:', err);