Help! Error Occurs when muxing DTS to DVD using Dvd Lab Pro

[song]

I deumuxed 2 minutes of M2V file, DTS file and AC3 file from DVD using DGINDEX.
Then tried to mux them together to a new one using DVD-Lab Pro(Which support DTS)

However error occurs.
and the error report is as follows:


"A serious error occured during
If your source files are non-elementary files,demultiplex them first and use these to ..."

Can anybody help me with it ?

Thanks a lot:)