The operation cannot complete because of an unknown error. [TAdd]

[hussaina6981693]

I was working on illustrator and shut it down along with other applications after a while when I boot up the software again it showed me a dialogue box saying " The operation cannot complete because of an unknown error. [TAdd] " with an 'ok' button and that's it. I clicked on it and Illustrator started as usual, a few seconds later I noticed none of the shortcuts were working, I clicked the File menu and saw that the shortcuts had  just disappeared from there as well and were not written against the specified command as they usually were, later i tried resetting the preferences to no avail, i tried editing the shortcuts to no avail as well, tried the method for the '[CANT]' problem and from a few other community posts and still didn't work. Rebooting in Safe mode didn't work as well. Anything else i can try?

 

[Monika Gause]

You could try and reset the preferences. Rename the folder because then it can be undone.