Convertxtodvd problem viewing dvd

I am newbie to this, so aplogies if my query has been covered before. I think the CONVERTXTODVD software is brilliant. I downloaded the trial version and converted a large .avi file as a test. I then transferred the VIDEO_TS folder to my laptop and burned a dvd using Imgburn. I can play the burned dvd (PAL/region2) ok on the pc, but when I try it in my set top Toshiba SD330 domestic dvd player, it says “PLAYBACK RESTRICTED”. Any suggestion would be greatly appreciated.