No waveforms after migration

I have an external hdd which i use if ive got my decks in another room.

At nye there i had just got a new setup CDJ 2000 nxs x2 and a djm 2000 nxs

Now the waveforms on the cdjs did not display and the bpms were fluctuating up and down,so i analyzed my entire collection on my laptop and external hdd and it was exactly the same?

Why is this?