Strange problem with Adobe Premiere and XP

I was using Adobe Premiere last night to render out to small files (about 500mb each) into one video file. I was going to transfer them to video tape so I didn't use any compression so I could retain the quality. I have a 40 gig hard drive and the video file was going to be around 25-30 gigs when it was finished.

Around the 20 gig mark (when the video file was about 85% done rendering) Premiere crashed and I had to restart.

Only problem is my hard drive still shows that the 20 gigs is being used. Now I have went from 25 gigs free space down to 9! When I checked the folder the file was supposed to go in there was no file to delete (and I have the "Show all hidden files and folder options checked).

I've been on the phone with Microsoft trying to find out how to free up the space but they had no idea.

Anyone ever ran into this problem?