I need help.

A friend of mine edited some videos, but now when he uploaded them to youtube he only gets a green screen with the correct audio. 

The video seems to play fine in his computer, but it will also not play properly if transfered to other computers. 

This is an important video.

Help please. 

http://www.youtube.com/watch?v=pXynJlNPkDs

http://www.youtube.com/watch?v=QCJNUCwEIso

http://www.youtube.com/watch?v=OoMIEO8EdwU


Those are the links.