I can no longer export from Illustrator as TIFF or PSD, and I can no longer place a JPEG, TIFF, or PSD into Illustrator files. Never had this problem before in 20+ years. I just get an error message saying it's "in an unknown format and cannot be opened." I've treied rebooting Illustrator and the computer to no avail. Any ideas?
Which version and system is that?
Illustrator CC 2020 version 24.3 on a Mac running Catalina 10.15.7
When was the last time you rebooted that computer?
Today, right after I discovered rebooting Illustrator didn't work.
Canyou try if resetting the preferences works?
You can rename the folder (this is reversible)
These files work in other apps? It's not a system issue?
Did you install something? Some system extension? Another app?
Are those particularly large files? Or some other special thing around them?
Do other files work: PNG, GIF?
I reset the preferences, as you suggested. It didn't solve the problem, but I got a new error message that may explain some things:
As for your other questions: Yes, the files open in Photoshop and Indesign just fine. They aren't large. I don't recall adding anything new. PNGs and other formats I've tried work fine.
So that looks like some more serious issue.
You can try if it works in a new user account on your computer.
Or simply uninstall, run the Cleaner tool and reinstall.
I got it to work. I uninstalled Illustrator, rebooted, and reinstalled. Thanks for the help.