Lost labels, ACR settings

Hello,

I just opened Bridge and I see that all the labeling and rating I did on my RAW files is gone. 

Also gone are all the settings applied in ACR, basically everything looks as if it's just been imported.

The option to open in Camera Raw has dissappeared and files RAW files are not recognised by photoshop.

I had a lot of settings applied on my images, everything is gone! Please help this is disastrous.