Whilst editing a video, the program suddenly came up with 'not responding' and then when my curser hovered over the video clips on the storyboard they would turn white / blank. Because I had made a few changes and saved the project and closed the program.

Now when I open the program and project the storyboard is blank but the preview plays back most of the video (some clips are black) and no audio. I saved the project on to my computer and it played back with the music working in media player but some of the video clips blank.

How can I fix this issue and recover what I've done?

Thanks,

Ally