I have a problem that is really puzzling me. Last Friday I started a new document, prepared with different fonts, margins and so on. Last Friday the document worked fine but when I open it today (without restarting the computer) I get an error message saying that a number of the fonts I selected are not installed on the computer. The problem persists even though I checked that the fonts exist and are activated. Likewise when I restarted. Anyone have an idea how I can move forward with this problem?