[pkscout]

<<UPDATE>>: Eureka pkscuot! I think I found the problem... I unselected "Use override slideshow" under Settings and also deleted the whole folder 'artistSlideshow' within 'script.artistslideshow' in 'add-on_data', then restarted XBMC, played a song and voila! TheAudioDB Bio for Tori Amos started to scroll on the screen. I will run some tests tomorrow to see if same behaviour extends to the rest of the artists and albums.

Now, can you explain to me what was happening? :-)

Um, not really.

In theory the override slideshow option shouldn't keep the bio from showing correctly, and I just checked the code to make sure. By deleting the addon_data folder for AS, you mostly reset it to factory default. AS is complicated enough now that it is possible that some set of settings are somehow conflicting, or that the upgrade from 1.5.3 to 1.5.4 just didn't go well for you.

Anyway, I'm glad stuff is working for you.

BTW, the actual order of searching for the MBID is:

1- ask XBMC
2- check for the .nfo file
3- ask MusicBrainz (via the logic I provided before)

That way once an artist MBID has been found and cached, AS doesn't have to ever ask for it again. If AS doesn't find one, after a couple of weeks it will try again. Retrying every time slows things down and is hard on the MusicBrainz server.