I've downloaded a trial of Contribute for the Mac. I was able to connect (using
ftp), and bring up the site. But when I Edit a page (ie, click on "Edit Page"
button), I get a blank page. It seems to have downloaded the page, but there's
just a thin line at the top-- I can drag this line down, but there's really
nothing there, and my site is not appearing. If I cancel Edit mode, the page
then appears normally again.

any help appreciated- thanks.