well...a set doesn't necessarily consists of roms only. A set is any combination of roms, samples and chds.
In your case you most likely miss the belonging chds and since these sets are sets with only chds, clrmamepro correctly reports the sets as missing (since you scan for 'sets' + 'missing'.
So either get the chds or create the belonging rompath subfolders for the chds and you won't see the missing set message anymore.


Roman Scherzer