Adobe Illustrator Operation Cannot Complete Because Of An Unknown - Error Parm

Users often find that saving the file as a PDF or EPS bypasses the PARM check. You can then reopen that file and save it back as an .ai file .

If you cannot open a file at all due to the PARM error, but you suspect a text issue: Users often find that saving the file as

Almost.

She opened the file in a text editor (a desperate act). Near the bottom, amid XML and path data, she saw it: <parm name="unknown" value="error_42" /> amid XML and path data

This resets all custom settings (workspaces, shortcuts, presets). she saw it: &lt

It reminded her: sometimes the computer doesn’t give you a solution. It gives you a riddle. And the only way out is to stop fighting the unknown error—and start reading the unknown word.