Willem,
I can't reproduce your problem, so help me understand better:
A) I don't see a preview mode, what are you referring to?,
B) You say "print/plot"; which one actually?,
C) "...kind of line from a marquee..." please describe this more fully,
D) Hm..., the area inside the marquee is not printing, but stuff above prints. By "above" do you mean, closer to the top of your screen, or the story above the current one?
Consider joining the forum, after 15 posts or so you can post screen shots of your problems, it is incredibly helpful to see the problem. You'll get much more targeted help in this way.
Snap
PS is your AC-11 updated to hotfix #1259?