I installed APS this evening. The monitor profiling went fine. I turned the monitor brightness all the way down to zero, but APS said it was still brighter than the target value. I guess APS made whatever adjustment was necessary. So far, so good.
Next, I tried to profile the trusty Z3100. But when I click Profiling, Printer, and then the Next arrow, the software comes back about 20 seconds later and pops up a dialog box with the message "Unknown Error."
In the main APS window (partially hidden by the error message) I can see: Printer Status = Connected; Calibration Status = "No Paper Found." Of course, paper is loaded and I can print without any problems from Qimage. HP Printer Utility also sees the printer and reports ink levels and the installed paper type and width correctly.
At the moment, I have two Z3100's sitting in the living room, a 24" (which is going back to HP, assuming they ever show up), and a 44" (which just arrived). Qimage and HP Utility see both correctly, but I thought having both connected (via Ethernet at different DHCP-assigned IP addresses) might be confusing APS. I disconnected one printer from the network, but this does not help; APS continues to return the same error message.
Any suggestions? As always, thanks for your input.