QuarkXPress crashes when opening one project
QuarkXPress has a built-in process for validating project files that you can use to try and repair any file inconsistencies. To do this follow these steps:


Launch QuarkXPress
Go to File > Open (or press commandO)
Navigate to and select the project file you’re having a problem with, but do not click on Open yet
Now press and hold controlshiftoptioncommand
While still holding these keys down, click on the Open button


You should find that the project opens successfully without crashing QXP, but you may also find that your content has reflowed differently to how you had it originally. Now you should create a new version of the project by dragging the thumbnails from this one to a new one. See below for how to do this:


Still in QXP, create a new project
Make sure the new project has the same layout and setup (such as facing pages or not) and also has the same number of pages
In each of the projects, go to View > Thumbnails
In each of the projects, go to Window > Tile and select either horizontal or vertical
Now, in your original project click the first page and hold down the shift key while you also click on the last page
Now drag the pages to your new project
Save your new project using a different name
Close both projects
Now try to reopen the new project you saved at Step 7


At this point, the best case scenario is that your new project opens without crashing QXP. If so, make a backup of it before working to get your design back to how you wanted.

If you can’t open the new project, then it’s likely the problem was a particular image, font, etc. If this is the case, follow Steps 1 to 9 again except at Steps 5 and 6 only drag one page across to the new project. If that works, then you know that page was fine, so repeat the steps to copy one page at a time and, as you do that, save your file using a different name each time. This way you’ll hopefully identify the page (or pages) that was causing the problem.

I know there’s quite a bit in this answer to follow, so if you have any problems or I’ve not been very clear, let me know and I’ll try to help you further.