'Not enough memory'

Were they linked images you moved or are they high resolution images. 

What are you running on now?

Hello @Macie29281834jzb8,

We understand that encountering technical issues can be frustrating. I hope the suggestions shared by Ton helped resolve the problem. If not, kindly try the steps shared in this article (https://helpx.adobe.com/illustrator/kb/not-enough-memory-illustrator-cc.html) and share your observations with us. We appreciate your time and effort in helping us resolve this issue.

Looking forward to hearing from you.

Thanks,

Anubhav

Does your links panel show them as missing?

This looks like you are in outline preview.

Did you try to close all applications, restart your machine and try again with Illustrator only?