AUP Filed corrupt?

I have a project where the AUP file seems to be messed up. The data folders seem fine, there is about 768 megs of data which is about what I would expect.
The AUP file is only one KB, when I open the aup i don’t get any errors, but it is just a blank project.
Is there some way to open my project data files and re-associate them to an AUP file at all? OR perhaps there is some other solution?

Thanks

You can open the .AUP file in a text editor (such as Notepad or Notepad++) to see what is in it, but I’m assuming there is not much.

I don’t hold out much hope for recovery, but you could look here: http://wiki.audacityteam.org/wiki/Crash_Recovery

What lead up to the problem?

I have no idea what caused the issue. I recorded the file everything seemed fine. Didnt even look at it for a long time.
Tried to open it the other day and got the initial problem i mentioned. I will look at the link you sent. At least i can rerecord it if i have too.