Compressor Says Failed “3x: Error : This Is Null!” Please Help!



Hello. I have come to a dilemma on my Mac using compressor. I shoot on a digital camera that captures in avi. I convert his footage to dv before I can get the footage into final cut I have to convert it to DV. I do this by making a droplet that converts the files to ntsc DV. This has worked very well for me in the past. But now every time I do it ( even with different amounts of files) it fails and gives me the message “3x: Error : this is null!” for every avi file and I cant get and converting done.

thank you for your help.