keep getting titleset 1 doesn't have enabled video streaming

[Kts]

hi all , new on here but could do with the right help please
i keep getting titleset 1 doesn't have enabled video streaming each titleset must contain at least one video stream box come up when i try to convert two files this has only happened when i up dated to convertxtodvd 7.0.077 . I've never had a problem converting files before
can someone help me get this sorted so i can convert, two files to dvd, the two files im using is ok they have been checked by other on their pc so we worked it out its not the files
thxs in advance

[JJ]

Conversion log or error log please.

[Katia]

Hello,

Usually you have this message when ConvertXtoDVD doesn't have the necessary decoder for this video, for example av1 of vp9 codecs often cause problems to our soft.
If you want we can check your video to give you an exact answer.
You can send it here: https://upload.vso-software.fr (Username: VSO_users, password: VSO_users)