What worked for me was to create a new user in the user and groups section of system settings. Give the new user admin rights and reboot. Log in as the new user (if you don't get the choice once you computer is fully booted, log out and log back in as the new user under the apple, top left corner of the finder). Once there, log into Canon's website and grab which ever package you need (for me it was EOS Utility and Digital Photo Professional for use with my EOS 5D MarkIV). Once downloaded, run the DMG installer and voila, no UniversalInstall quit unexpectedly" message. Just remember if you have Sequoia, you will have to choose the next one down "Sonoma I think, just for the software to be shown. At the end of the day, it looks like an Apple problem, but who knows.
Next, log out from your new user, go to your applications folder and there you will see your newly created Canon Utilities. It's best to remove (or backup) your old Canon Utilities folder if you are a bit squeamish about losing them). Double click on the desired app and bam, works like a charm,
