captivate 9 mp4 not launching after published

Since CP9 I tend to publish separately to HTML and to SWF, because the behavior can be rather different. This can be due to extensive use of advanced/shared actions and learning interactions. It is better to have two functional courses than to try to use the multiscreen.html way.

Event video is included, you had to define a path to that video. Make sure you have a relative path, and include the video in the package after publishing with exactly that same relation as when you created the course. If you use an absolute path to the video on your system, it will never work on another system.