Error while trying to burn to DL Disc

I’m trying to burn one own movies to a DL Disc and Nero 6 keeps giving me an error that says that it can’t perform start of Disc at Once. I’m using Memorex DVD+R DL media. I have absolutely no problems burning to single layer discs, but I have to shrink the movies to do that. I’m just looking for any help with this. I tried writing to Nero’s tech support and i didn’t get any help. My burner is a NEC DVD RW ND2510A. It was bundled with my machine along with Nero.
Thanks :a :a :doh: :doh: