I am currently using the 21 day trial version to backup my dvd's on my hard drive. I have read that I can convert a DVD into one long VOB file. My problem is that whenever The output file reaches 3.99G i get the OH NO sound effect with an error message stating not enough room. I am using a 320GB external drive and I can't seem to understand why it is stopping at 3.99GB as most DVD's are approximately 4.7GB in length. Can anyone shed some light on this? Thank you.:doh: