Permissions problems with new Catalina setup

I'm struggling, can anyone please provide workarounds to the following 2 problems I'm experiencing?


Since Betas 2, 3 & 4 of Catalina:


1. Permisions problems when trying to copy progams files across to the applications folder.


2. Cannot load Security and Privacy Preference pane - get Preferences error)


Are their any known program conflicts with the operation of macOS Catalina's Security and Privacy Preference pane?