When running the Database Design Report I got an error when I tried XML format.
I reran as HTML and I did not get the error but the layout list was incomplete.
It only listed 68 layouts out of 210 in the file.
Post the error? (screenshot)
You might also search this forum for similar issues.
Beverly is right: first step is providing a screenshot / exact error message text.
There are things that can happen in a FileMaker database that don't impact general functionality, but can impact the XML. Usually this manifests when you try to do something with the XML... It's just that your "missing layouts" sounds a lot like the DDR corruption issues we've been seeing
Quick and dirty advice:
1) make a local copy of your system
2) repair the database(s)
3) See if you can output XML.
4) If you can now export DDR XML, download DamageDetectoR (free macOS tool from Geist Interactive) and see if it can provide any guidance about potential bad elements.
Please report back with your results to either of these approaches.
Retrieving data ...