He tried to export. He needed this file. It was a memory he was trying to externalize, a shape that existed only in his mind.
Instead, here is an informative article covering safe, legal, and practical alternatives for Mac users who need vector graphic design software.
Adobe no longer sells or provides direct downloads for CS5. The only official way to get Illustrator today is through a .
If you are using a modern Mac (macOS Catalina or later), . Illustrator CS 5.0 supported in Mac Os Big Sur? | Community
Instead of risking malware and legal trouble, consider these legitimate alternatives: