S4 BPM Not Showing

[Nunz]

Thanks to all, but I just solved the problem. (Actually, I have no idea, it just started to work again haha).

[hacksics]

This happened to me too.

What I did was first analyse to songs and then replace the tracks with new version (which I have analysed for song key using Mixed In Key) and it didn't work. Do you have any idea?

[Karlos Santos]

The solution is to 'unload' the track that is in the deck.
This forces Traktor to update the tag info and display the BPM.