Sigh.
So I've upgraded to 5.1.0 beta, tried to import the rigs in the folder "Pitch Shifter Delay Demonstration Preset Pack" included in the firmware upgrade zip, and got the message "No import necessary, All Rigs and Presets already in Browse Pool", even though they're not there.
Tried turning the KPA off and on again, retried import, no luck, same message.
I've copied the rigs to the "\Shared" folder in the memory stick BTW.
Am I doing something wrong? If not, anyone knows a workaround?