i get an error when uploading, any idea why?

heres a screen shot, windows media player just pops up tellin me it wont play it or something

I'll have someone look at it.

Don't worry! We'll get you in there Edible!

If you can post a link to the video I can post it for you. Or you can upload to the FTP server too.

i cant upload it anywere at the moment because the video is 20mb, and the biggest files i can do are 10mb.