Calibre not working right for me

[Klippy]

I have been using Calibre for several years. I updated and now something has happened. I go to add books, pick the 3rd option down. It looks like it is adding these books then it ask about duplicates. It is at this point things start not working. I click the duplicates I want added and adding duplicates pops up BUT none are added and none of the other new books are showing up/ I hope I am making sense I have a hard time trying to explain things. I hope someone can help me. I will go crazy without Calibre