I have a client that is trying to undo a setting in Adobe Professional, but everytime she unchecks the box she gets a message saying that it can't be undone.
p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.