One thing that never fails to frustrate me is when someone sends you a Quark file but does not collect the file for output. Basically the collect for output function finds and collects any pictures and fonts in your document so that when you send the file to someone else they have all the files they need. One thing I have noticed with new Quark users is that because they can see the pictures on screen when they have the Quark document open, they assume that another user will have the pictures. This is not the case, unless you actually send the individual picture files through with your Quark document the pictures cannot be reproduced or printed. The simplest way of doing this is to use the collect for output function from the file menu, to collect all the included pictures together. The same function will also alert you if there are pictures missing from the document which is useful. One thing to be careful about is ticking the collect fonts for output option as you might not be licensed to send the fonts onto another party. I find the easiest thing to do is use common fonts that most printers are already likely to have a license for, so the issue does not occur.