iTunes quit unexpectedly

On one of my two computers, iTunes keeps crashing, with the error shown in the screenshot below. It seems to be happening while I'm downloading my iCloud Music Library, but it doesn't matter what I'm doing; listening to a playlist, listening to iTunes Radio, it keeps quitting on me. My iMac is out of warranty so I'm not sure if I can get help with it. I've already tried (repeatedly) creating a new iTunes Library file, but that hasn't helped anything. I've also tried signing out and back into my account. I was getting this error on my other computer, but less frequently. If I had to guess, I think I have a corrupt file somewhere that iTunes is trying to reload on my computer, but I'm not sure.