[Daniël Louw]

Your mention about the artboards put me on a hunch. I am using CS5, but all the artworks are on the artboard. So I saved it down to CS2 as you suggested. It fixed the problem. Saving it back up to CS5 made no difference and I can now add strokes without breaking anything.

I still do not know what caused the problem. I might raise the problem with Adobe themselves one day, but it’s not that serious.

Thanks!

[Daniël Louw]

Can you please explain what you mean by drawing with an appearance?

I tried the default stroke as per your suggestion – same problem.

See attached for the file I’m working on. It’s a bunch of unstroked and unfilled paths. When I select a path, and add a stroke with the Control panel, it distorts.

Note the paths in my file are unclosed for a reason. They are motion paths for After Effects 🙂

2980_logostroke.ai.zip