Deleted playlists still visible?

[JAB]

My Qnap has now the new firmware, with TMS 5.1.2.
I have changed the scanningtime interval to -1.

The problem is, I have made several changes to tags of audiofiles and deleted a lot of playlists. But althought the server is (several times) restarted and the time of the last change in database is actualized, nothing of all changes I made are visible. I have still all deleted playlists visible in the playlist view and still wrong artistnames (typos). Why does TMS not actualize and how to get an actualized TMS database.
(PS I have NO knowledge of Linux, so I don't know to manually remove configuration files. I only see the share directories in Windows).

[Twonky_Rick]

You might want to try deleting them with TwonkyMedia manager. You can run it for free for 30 days.

- Rick

[JAB]

It seems that with TMS 5.1.2 both the view Playlists and Composers are not properly updated.
All deleted (or changed) entries are still in the view. So the view keeps on growing and growing ...

[JAB]

Pity, no reaction on this problem?

Some help please. I've cleaned up all my audiofiles with the proper tags so I can browse them properly with the treeviews present in TMS 5.1.2 (although I really miss AlbumArtist here).
But although I have cleaned up the Composer tag, all "old" Composer data stays in the tree which makes viewing not easy. I have restarted server several times, but that doesn't help.
Who can help me with this issue? How can I cleanup? Or how can I rebuild the TMS databaser from scratch, so all "old" data is gone.
My TMS5.1.2. is pre-installed on my Qnap NAS, I have no TMM running.

[Twonky_Rick]

There is a database rebuilt command. Have you tried that yet?

- Rick