[Davmar]

I have hundreds of books in my library and have installed a new SSD . I have reloaded all data but now I am getting a error message saying unable to load any of my Calibre records. I have tried deleting then reinstalling and reloading but same error message referring to a Metadata fault? (What is this) and will not allow access.
I very much a newbie and I am lost as to what to do to recover and use Calibre.
Can anyone help? Please