Lost Meta Tags with new release R4

I Lost Meta Tags with new release R4!

I have my ripped my Audiofiles in Wav. But after the update I lost my Albumcover.
For example my 8 Santana CD´s now have all the same cover!?!
Does anyone know why?

thanks.

If these files were ripped before you updated to R14, then the update to R14 would not change the files.