Hi again Laurence,
unfortunately, *-* does not work - neither for me nor for my colleagues. We can search for e.g. middle-*; *-class; back-* and get results, but the string *-* does not work.
We use the same version of AntPConc as you, have the same settings (as compared to your screen-shot). The files are aligned and work fine with other searches, just not the hyphen search.
Is there a way to define characters as words in AntPConc, as there is in AntConc? This might solve the problem, but I am not sure where to define things in AntPConc...
Very many thanks for your help!
Best, Alex