All imported 3D models to library suddenly gone!

[Karolita]

Greetings, today as I launched SH3D to make new project, I saw that the app is as I downloaded it, with only the basic models. Meanwhile, for a year I was importing numerous models and textures, about 1000 extras and everything is gone. I have them stored in my hard disc but it will take months to import them again.
I work on a MacBook, i did not change anything on the computer and until yesterday everything was ok.
Any ideas on how to retrieve all those models easily?
Thank you!!

[Puybaret]

This post explains where the folder with imported data is. Could you check the content of this folder?