What type of "Film" are you trying to "Copy" ?
You probably need just to Re-install Sonic RecordNow!
I assume Sonic came with your Computer (?)
What Make/Mode;# Computer are you using ?
HP ? Dell ?
You could just use CopytoDVD - to burn your Files to Disc
CopytoDVD id free with your 1Click License
I'm not a Big fan of Sonic/Roxio :Z
I've long since removed Sonic/Roxio from my Computer