Although Mac Informer correctly identified that AppTrap.prefPane needed to be updated from 1.1.6 to 1.1.7, the version automatically downloaded was 1.1.5
This is the first update I have done so I don't know if this is a common problem.
It was easily corrected by visiting AppTrap website but it was just luck that I noticed as I had not expected there to be a problem.
It shouldn't be a common problem, as most of these links are checked manually. It's likely a human error: someone must have picked a wrong download link from the AppTrap website (there are three of those up there).