Hi.
I try to install PiezoDN new curves with OS BIG SUR and a an Epson P800. .
I give you the message I recieve 
When I want to install my new piezodn curves this is the message I get.
I don’t understand what I can do.
------The default interactive shell is now zsh.
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/Applications/Piezography/Curves/P800-PiezoDN-Pro/InstallP800-PiezoDNPro.command ; exit;
macbook-pro-de-michele:~ michelelafaye$ /Applications/Piezography/Curves/P800-PiezoDN-Pro/InstallP800-PiezoDNPro.command ; exit;
Creating printer named: QuadP800-PiezoDNPro as Direct USB Printer
lpadmin: Printer drivers are deprecated and will stop working in a future version of CUPS.
No default ink limit found, using 100
Could not find gray highlight, using 4
Could not find gray shadow, using 4
GRAY_GAMMA missing, using 1
Creating curve Limiter-Master-out
Couldn’t open /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Limiter-Master-out.quad for writing: Permission denied
No default ink limit found, using 100
Could not find gray highlight, using 4
Could not find gray shadow, using 4
GRAY_GAMMA missing, using 1
Creating curve Limiter-Master
Couldn’t open /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Limiter-Master.quad for writing: Permission denied
cp: /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Pro-PiezoDN-ArgyBX.quad: Permission denied
cp: /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Pro-PiezoDN-Cyanotype.quad: Permission denied
cp: /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Pro-PiezoDN-ilf_CLASSIC2-limited.quad: Permission denied
No default ink limit found, using 100
Could not find gray highlight, using 4
Could not find gray shadow, using 4
GRAY_GAMMA missing, using 1
Creating curve Pro-PiezoDN-Master-out
cp: /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Pro-PiezoDN-Master.quad: Permission denied
No default ink limit found, using 100
Could not find gray highlight, using 4
Could not find gray shadow, using 4
GRAY_GAMMA missing, using 1
Creating curve Pro-PiezoDN-Master
Couldn’t open /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Pro-PiezoDN-Master.quad for writing: Permission denied
cp: /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Pro-PiezoDN-PtPd-DevOut.quad: Permission denied
cp: /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Pro-PiezoDN-PtPd-PrintOut.quad: Permission denied
cp: /Library/Printers/QTR/quadtone/QuadP800-PiezoDNPro/Pro-PiezoDN-Silver.quad: Permission denied
Installing QuadToneRIP Curves Printer QuadP800-PiezoDNPro
Curve Pro-PiezoDN-Cyanotype
Curve Pro-PiezoDN-Ilf-F-classic-Limited
Curve Pro-PiezoDN-Master-out
Curve Pro-PiezoDN-Master
Curve Pro-PiezoDN-PtPd-DevOut
Curve Pro-PiezoDN-PtPd-PrintOut
lpadmin: Printer drivers are deprecated and will stop working in a future version of CUPS.
Finished Installing Curves for QuadP800-PiezoDNPro
logout
Saving session…
…copying shared history…
…saving history…truncating history files…
…completed.
[Opération terminée]-------
Have you an idea what i can do?
Thanks
Michèle