"No se puede completar la operación debido a un error desconocido. PARM "

Hi there,

Sorry to hear about the trouble you are facing with Illustrator. I would request that if you could please share a few more details like:

• Which OS and version of Illustrator you are working on. 
• Is the issue related to a specific document? If yes, could you please share the document with us? You can upload it to the Creative Cloud (https://helpx.adobe.com/in/creative-cloud/help/share.html) and share the download link.
• Where the files are being exported (Network Drive/ System HDD/ Shared Folder on System /External HDD)?

We’re here to help, just need more info.   

Regards,

Srishti