maurice2029, the error message you're getting might be related to the bitrate of the multiplexed mpeg2/ac3 clips. It may just be too high for the software to handle (and might not be compliant to DVD specs). Solution is to find the file that gives you an error mesage during compiling process and make ac3 (or alternatively mpeg2) file with smaller bitrate, so when it's multiplexed the combined audio/video bitrate is within DVD specs.