Sony Vegas 10.0 Stopped responding! Didn't save file! HELP?

So I was working on a really important video in Sony Vegas 10. It was the first time in a long time that I got inspiration and was willing to make a video. I procrastinated this video for a few months. I used Sony Vegas plenty of times in those few months for other videos with no problem. Every so often the program stops responding, but it goes back to normal in seconds. But then there are times when it refuses to respond and I can't do anything about it but close the program. It already stopped responding the first time I was making my video and it auto-saved for me... thank goodness! But as I was JUST about to save it it froze up again. I know if I close it I'll lose all my hard work, I don't want to repeat it again, it won't be as good and it's just wasting my time. I remember there was a folder for auto-saved files in Sony Vegas's file somewhere, maybe it's there and I can open it up and use it again, anyone know where that's located on my computer? Is there a way to make it respond in the first place? PLEASE HELP!! I don't want to lose all my hard work I worked on for hours! :(