The Diary Generation Messages Dialog lets you view the messages issued by Q++ and QuarkXPress during diary generation. These are not necessarily errors.
When the dialog opens, messages are grouped. Click on the plus sign to the left of any group to see all its messages.
When you select a message in the advanced data grid at the top-left, its full text appears in the Full Message area below the list of message, a rough sketch of the original object is displayed at the bottom left in Original Object, and the p-Code that was executed is displayed on the right in Attempted Instructions.
Also, when you select a message, a preview of the corresponding help topic is displayed on the right in Help Preview. Click on any of the hyperlinks to jump to the related topic. You can use the Back and Forward buttons to navigate the history of topics view. Click on the View Full Help button at the right to open up the full version of the Q++ Help, which includes graphics, navigation tools and search tools.
Note that even after you have closed the diary generation status window, you can still go back and list the messages from the most recent diary generation, using the Debug/Diary Generation/Error Log menu sequence from the Q++ main window.