The operation couldn’t be completed. (com.apple.installer.pagecontroller error -1.)
I am using Cataline. My iMac is 2016. High Sierra was th OS. The issues I am having are. tremendous. My latest issue is this whilst trying to install a music plug in. The operation couldn’t be completed. (com.apple.installer.pagecontroller error -1.) I have been in touch with the supplier of the plug in. No answer as of yet. But, I am sure they are gonna come back and say it is an Apple issue. Does Apple even help here? Any help would be very much apreciated.
iMac 27″, macOS 10.15