Streaming videos are not saved in the Ustream.
Make sure that Recording is checked in the Network Setting Tool.
If ERROR is displayed at the end of streaming videos, the video will not be saved on the Ustream server side. It is possible that a problem occurred on the Ustream server side.
If you are able to re-take the video, try again after waiting a while or save the videos on Ustream from the videos in the memory card using the Ustream Producer.