Premier Rush just crashed, my movie has disappeared

PR crashed about an hour ago, when I relaunch and go into the project the media files are still in there - shown on the left hand side - but the actual movie I've creating - all the edits, tranitions, music, everything - is gone. Just a black screen. Any suggestions on how I can get this back wwould be greatly appreciated because if I've got to start agian from scratch I'm going to explode. 

Thanks

Si