Can't edit track rating in TM view for 1 specific album

[sleepless]

I recently found an album for which I can't edit the track's ratings in TM view in the Now Playing panel. I click on the stars but nothing at all happens. No problems editing the ratings anywhere else in MB. All other albums/tracks have always worked, like this:   
 [img=http://s12.postimg.org/azaj5ii7x/gif6.gif]

Can anyone think of why the tracks in this one particular album wouldn't allow it?

EDIT: Well it seems to be fine now. Very strange. Looks like rebooting my PC did the trick.

[redwing]

What if you try with other TM views?

[boroda]

check if tracks are not read-only marked