Illustrator shows spinning circle - tried everything
I can use the mouse, but the cursor has a spinning wheel even outside Illustrator, and the menus don't work. I've been through checklists about install/reinstall, remove user preference folder, in Illustrator as in other products, I've tried moving all the fonts I could from the fonts folder. I've rebooted multiple times. I've tried reinstalling Illustrator. After doing all this, I get error messages such as "The operation cannot complete because of an unknown error (SExi)", "The operation cannot complete because of an unknown error (CANT)". I'm currently also using After Effects - I removed the user preferences using the Ctrll - Shift - Alt keys.
Version: It's the latest version of CC