I teach Woodshop at the high school level. I use Illustrator as a drawing program for our laser cutting machine. I've been running into a problem when exporting files to a USB. I keep getting this error message (I attached a screenshot):
"the oporation cannot complete because of an unknown error [PARM]".
This has never happened until this year. I am not an AI expert but I always follow the same steps for exporting DXF files and this has started poping up nearly every time.
**Please note that resetting preferences will remove all the custom settings and Illustrator will launch with default settings. You can also take a backup of the folders in case you want to. Location is mentioned in the article.