My Demo Design Library disappeared after I saved some custom cutouts there.

Following this video:https://www.youtube.com/watch?v=_fHy7V599Q8 (13 minutes long)

I saved some custom holes into the library.

Now I cannot find the whole Demo Design Library. My Solidworks 2014 had crashed and many settings went unsaved. I just installed it.

Where is it located on a HD, in case I want to back it up?

Thanks.Where is it located? Why don't I see an icon in Solidworks anymore?

SolidworksToolbox