Categories empty after moving to v2.1

Hi,
I'd been using v1.9 for years, very successfully but today decided to install v2.1 on the same Ubuntu server. I switched to running the 2.1 version and allowed the library to be built from scratch. I use .nfo files for metadata and have always done so.
Unfortunately, the only category with anything in it when viewed via my LG television is the Titles category. Series, Movies, Genres and Directors are empty. I can browse via the Folders category OK though.
I've carefully checked the configuration using the serviio console and can see nothing wrong. I don't see anything bad happening in the logs either. I see lots of info messages indicating titles being added to the library OK in fact.
Hope someone can help
All the best
Martian
p.s. just checked and the same categories are empty when viewed via the serviio media browser web application also.
Also, I looked in the database and the series, genre and genre_item tables are all empty.
I'd been using v1.9 for years, very successfully but today decided to install v2.1 on the same Ubuntu server. I switched to running the 2.1 version and allowed the library to be built from scratch. I use .nfo files for metadata and have always done so.
Unfortunately, the only category with anything in it when viewed via my LG television is the Titles category. Series, Movies, Genres and Directors are empty. I can browse via the Folders category OK though.
I've carefully checked the configuration using the serviio console and can see nothing wrong. I don't see anything bad happening in the logs either. I see lots of info messages indicating titles being added to the library OK in fact.
Hope someone can help
All the best
Martian
p.s. just checked and the same categories are empty when viewed via the serviio media browser web application also.
Also, I looked in the database and the series, genre and genre_item tables are all empty.