Hi Folks....
First of all, many thanks for having me in this forum.........PVD is a wonderful program and I know I'm gonna have a lot of fun updating my collection of movies.
On this issue of actors' roles not being imported, I believe I may have found the solution.........This morning I downloaded the program files, installed PVD and immediately updated the IMDB Plugin. Next I went into Preferences > Movies > Information Card, and under the section "Show credits as" I simply checked both "Name" and "Role". Exiting out of the Preferences dialog box, I looked at some of the movie details I had downloaded from IMBD and voila
.........Actors' names had their roles.
I hope this helps.