I too, have a similar issue on converting a blu-ray movie to my HDD, I get an error at the end and does not complete the whole movie.....throughout the credits, it plays fine but never towards the ending of the movie.........For instance the lenght of the movie is 1:59.57 long and it ends/stops at 1:46.10.

Dual:

I get an error at the end and does not complete the whole movie

Which error do you get? Please could you attach a screenshot.

Make sure the protection has been successfully removed from your Blu-ray disc.

When you convert Blu-ray movies, please import index.bdmv into AVS Video Converter and choose the title in Advanced > File Information window. If you would like to convert more than one title, you will need to use the "+" button and import the same index.bdmv file into the program once again, then select the second title.

Also make sure you are using the latest version of AVS Video Converter to convert your files.

Best regards