There's a folder on my desktop that refers to my latest import (name)-2.lrcat but when I try opening it in LR only the title shows up on the title bar, no images. I also tried going back to LR5 and same thing. Why aren't my photos/folders showing up anymore? And where can I find them- or at least get them opened in LR? Thanks
Click on file and choose open recent , it will show you the recent list of the catalogs that you have opened.
Try opening each one them to check out which the catalog is the correct catalog.