not able to publish as mp4 in Captivate Classic.

I am not able to publish as mp4 in Captivate Classic. I have uninstalled and reinstalled the app. I have deleted all the Advanced Interactions and variables. Myself and one coworker are not able to publish as mp4. However, another coworker was able to do it on her laptop. I installed the application on my personal PC, and it WORKED. What is it about our 2 laptops that is stopping this process. The error is: SWF compilation Failed. Any ideas?