Quiz Scorm embedded in Crossknowledge program doesn't appear as finished when done

Hi everybody, I need help with Adobe Captivate. I created a quiz (Scorm) and this scorm is embedded in a learning program in crossknowledge with some videos (iframe). The problem is, once the user has finished the quiz it doesn't appear as finished in the crossknowledge program. So a user can do the whole program, all videos are shown as "done" but not the quiz. I tried with Scorm 2004 and scorm 1.2 and different settings, but nothing works. One quiz is just a prequiz to find out the adapted learning program, another one is a final test where people need to achieve 80% to succeed. So I have different types of quizzes and different settings, but none is shown as "done" in the learning program. Anybody any idea what I should do? I don't know much about Captivate so every hint would be helpful. Thanks in advance!