
In 99.9% of the cases, all these problems are caused by the same issue:
Your cache in your browser is full and preventing a complete download of the video.
This is easy to fix:
If that does not work, make sure you have the latest version of the Adobe Flash Player for Windows or Quicktime for Mac and iPad.
Windows
Mac
If that does not fix the problem, please contact us. We will be happy to help you.