the operation cannot complete because of an unknown error parm

[graceeoleary]

I am trying to outline strokes in illustrator but keep getting the same error. 

I have upgraded to the latest illustrator, restarted my computer etc but nothing changes. 

I have tried copying the file over to another file but that doesnt work either. 

[sishamIAGD]

Have you tried doing it with a completely different new file..? just to test? Have you cleared your preferences?

How to reset Illustrator Preferences - Adobe Support Community - 10602277

[graceeoleary]

Hi! yes I have tried in a new file and also cleared preferences - still get the same error.

If I draw a stroke in the same file and outline it - it works its just the illustration that is causing the problem. 

[Ares Hovhannesyan]

You can try to delete preferences phisically from folder: KB76721646: Deskpack - How to delete Adobe® Illustrator® preferences - KB76721646: Deskpack - How to...

or try Use the Creative Cloud Cleaner Tool to solve installation issues
https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html

[Met1]

Post a screenshot with the stroke selected with Direct Selection Tool (white, type "a") and the appearance panel open.

[graceeoleary]

 

[graceeoleary · Accepted solution]

I realised I posted the wrong screengrab as I had the whole had selected, however your comment helped because I realised I needed to expand the paint fill for it to work and now it outlines strokes,

thank you!

[Lenny36868480jzdi]

I had the same issue and it was because the strokes were grouped so I just had to ungroup them, for anyone else experiencing the same issue.

(Possibly a silly blunder on my part.)