can't copy from disc to disc usin nero

i'am using nero. when i try to copy a dvd. i get the error that says not enough space on disc. the disc is empty. can someone please help me with this problem.

 

Sounds like you're trying to burn a file larger than the nominal 4.7GB. Is this the case? Is this a movie? We need more info for what you are using, doing and hope to do.

 

i'm sorry the disc i'm trying to copy is only 3998 gig. i made it using dvd shrink.