One shot (attached) is of the Dictionary menu greyed out. This happens when I load the script.
The other shot is of the Dictionary window (i.e after I open the dictionary). You will see that the Explorer tab is greyed out. I cannot click on it. I was looking at the Finder dictionary at the time, but it looks the same for all applications.
That’s correct behavior – items are only enabled when they can be used (a dictionary window active).
Yes, I can see that now – I missed the part where you said v5. I don’t know what’s changed with 10.12, but the best answer at this stage is an upgrade to version 6.