Details of your operating system and version of Adobe Illustrator (desktop):
- MacOS Big Sur 11.1 (20C69)
The steps you were taking when you experienced the issues:
- Attempting to open an older Illustrator file that was created on a previous version.
Your expected result:
- The file would opens successfully
Your actual result:
- The file does not open, Illustrator auto closes and I receive an unexpectedly quit system error message

Can provide screen recording of issue, but file too large for upload