With certain configurations of Notes, when end users click on the pab replicator button, they receive an unsigned certificate error in the Notes Client.
This behaviour is by design in Lotus Notes.
The only way around this issue is to create a new form in Domino Designer. Then, cut and paste the code from the Quest Pab Replicator form into the new form and save it and sign it as the admin in the desired domain.
It is also recommended to copy the text of the Quest Pab Replicator form, to a neutral format (such as notepad) and then copy and paste it from there so that it retains no vestiges of the source environment.