I'm working on some web layouts at the moment and having a problem with the crop-mark tool. I've got my layout on screen, and want to crop out some un-needed space at the bottom of the page. Obviously you do that by putting the cropmark edges around the space you want to keep - thus deleting the un-selected stuff. When I confirm the selection, everything on screen disappears, like I've just deleted the whole work space or something. Never used to do this until this morning, and pretty sure I havn't clicked any options within the crop tool. I'm stuck! Anyone have any ideas?