01-06-2020 11:42 PM
I've been away and just got back to trying to solve the problem. I first deleted all previous installations of PSP. I then downloaded the latest version of PSP for the Canon site and installed it. I then went to System Preferences, Security & Privacy, Full Disk Access. I then entered my credentials to unlock and pressed the + sign to add an app. I then searched for print studio pro in the search bar and presto it came up. PSP now works but I have yet to test it for colour accuracy.
Hope this helps.
03-23-2020 12:45 AM
There is a new Catalina compatible version on PSP on the Canon UK support site.
It took a bit of work to set up. Had to delete the printer and re-install it as PSP couldn't see the printer but it was worth the trouble because it now works beautifully again (ran some test prints and they compare favourably to the screen image). Great to get back to my workflow.