Print to Tape - Timeline

[Xebec]

I'm using MS8.

When I select Print to Tape, Timeline, I get a "Not enough Disk Space" error.

I've got 125GB free on the drive on which Ulead is installed, and 46GB on a second drive.

Why the error?

BTW, when I save as an uncompressed DV AVI, it's about 4 Gig. I'm on WinXP, with NTSF.