I keep losing my art library

it just shuts down, and I lose everything I put in it. I saw another post to go to back up but I don’t have, did I lose permanently
??? why does this keep shutting down on me??? Lightburn!

Hi Lori, what computer OS are you using?

i have a mac 9.14 version i believe if thats what your asking, lol i am so new to this stuff