Copy of the HP list reply:
I have not seen an issue like that with two APS pucks and they both give
similar results. On Windows though. Right now I use them with
ArgyllCMS/DispcalGui + a correction matrix made with an i1 Pro which
improves at ;least the wide gamut monitor control. There is a choice in
the main APS window where you can select what ICC version (2 or 4) you
want to create. It might make the difference in Leopard OSses if you
stay with version 2 profiles.
If not you could try Dispcalgui with the HP branded i1Display II from
the APS package. You would need the ArgyllCMS modules and use the Argyll
driver for the puck. If the puck has problems it should show similar
problems with that software.
met vriendelijke groeten, Ernst