Hi,
I think I finally found a pattern on a problem I've had for a long time.
I have the cover art set to be stored in a central location and inside the files. Some of the art was not storing properly inside the files and even for the same album, some of the songs got the art stored and the others didn't.
Could it be that updating a second tag "stops" the remaining updates?
This is the pattern I think I found:
1.- Import 10-12 albums with no cover art.
2.- Perform an Image->Get from Internet.
3.- Once the batch is finished, you'll see that message of "Updating tags, 156 remaining... 155...154...153... etc.
4.- Before the update is finished, change a different tag for some of the files, for instance the genre. You'll see the new message "updating tags, 170 remaining... 169... 168, etc.
The result is that even you will eventually get the message that all the tags have finally updated, some of the files will not have the cover art (first process launched) stored in the file.
My guess is that the files that were still not been updated when triggering the second process (#4 above) will not make it.