Sounds like there’s something at 53% it doesn’t like anymore. Could be any of several things that are happening.
First, I would check the .BAK file and see if that version works.
Then I would try moving all the media files, open the project ignoring missing media, and see if it opens that way. If it does, then start reattaching the media one piece at a time.
This is also a good time to mention creating a series of save files. For example, add a version number on the end of the file name and periodically up the number so you can always get back to a previous known working version. This is where my Auto Save custom command for Vegas Pro 8 comes in handy!
If you have none of the above, then the only remaining options would be to redo it or see if Sony can help.
Edward Troxel
