I have UIScrollBar components in my Flash files and they are
very inconsistent - sometimes they show up, sometimes they do not.
It doesn't seem to matter what or whose computer, it's kind of
random. I read something about if the length of the scrollbar is
smaller than the combined size of its arrows, that it could make it
disappear - but this is NOT the case on mine, so that can't be the
reason. I read on further about parameters and class
(mx.controls.UIScrollBar)...but not knowing action script very well
(at all), I am not quite sure what to do with it. (The action
script in my files were created by somebody else).