Unlike errors such as "Out of Memory" or "File Not Found," the [PARM] label is an internal Adobe code. While Adobe does not publicly document every error code, reverse-engineering from decades of user reports and engineering insights suggests that
The "Operation cannot complete because of an unknown error" message in Adobe Illustrator is a generic error that can occur due to various reasons. The error code "parm" specifically indicates that the issue is related to a parameter or a setting in the software. This error can occur when trying to perform various tasks, such as saving a file, exporting an image, or applying a certain effect. Unlike errors such as "Out of Memory" or
Close Illustrator. Hold down Alt + Ctrl + Shift (Windows) or Option + Command + Shift (macOS) while relaunching the app. Click "Yes" when asked to delete settings . This error can occur when trying to perform
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" /> Click "Yes" when asked to delete settings