A screen capture would be helpful. Include the Swatches panel while the stroke of the frame is selected.
Have you tried a stroke of None instead of 0% Black?
Resave the file as AI.
OK I did and it works, but this means that we can't use eps files anymore?
When I link the eps file with the illustrator file he resizes my logo everywhere.
Sorry reacted to early because even with the illustrator AI file it shows again.