Downloading and Installing MacOS Catalina
I am trying to download this new OS Catalina but I get stuck for 5 hours, tried a few times, it sometimes manages to reach the end of the download but when it starts installation it says "New system files can't be installed" no reason why.
I am running Mojave 10.14.6 MacBook pro 13 2015
MacBook Pro 13", macOS 10.14