Videos dont progress after playing (case 5526)

[polysemyboy]

Please see the questionnaire file that I am attaching. I have tried two different movie clips in two different formats (.avi and .wmv). Althought both of them played just fine in full screen size, when both of them finish, the screen just goes to the regular medialab background with a blank, black rectangle in the center of the screen. Please tell me what I am doing wrong and what I can do to correct this problem. Thank you.