FM 15 ADV, Windows 10 64 bit. The DDR report is not showing the layouts and scripts that a field is used in. Can this be fixed? If not, is it possible to get and use an earlier version of the DDR?

HTML version of the DDR?  Is it there in the XML version of the DDR, try the trial versions of FMPerception, BaseElements or Inspector Pro if you don't want to dig into the XML yourself?

What do you mean with 'earlier version of the DDR'?  From a previous version of the file? 

yes. perhaps from FM adv 13 that I still have on my computer. Although, I thought the DDR is integrated with FM.

Not sure what you mean by 'integrated'.  Running a DDR is a feature of FMPA.

Anyway; noticed that you also posted on FM Community site and got more answers there so I'll refrain from keeping two threads alive.  As a gentle reminder: it is good form to indicate that a post is cross-posted on multiple forums.  A lot of us are on those different forums.