Try other frame rate or change 'Detect/Force 24Hz' flag.

I'm trying to convert an already ripped 45min DVD to SVCD. I loaded the ifo file, changed input and output settings and after 15sec of encoding I get this error. After previewing what it has encoded, it is perfect so why is this error coming up. I don't understand what it says but I did try playing around with the detect or force 24hz flag and it made no difference. Framerate is 29.97 on both the input and output video. Any help?