Nero Startsmart

Need soem help with this prog if poss have 2 avi files that i am converting using startsmart to burn onto a dvd player so will work on dvd player all seemed to be going well untill ran into an error low disc space. prob is i had about 40gigs empty before i started can soemone tell me if it is correct that 40gigs will be turned into temp files then burnt onto dvd ?

Hello all
I have the same prob and dont know if it means the temp file is full or if its a glitch in reading my c drive.
Hope someone can answer this problem.
Gatamig