I was updating PT on my computer from version 7 to 8 but in the installation process after extracting the files from the 7z archive and asked for Administrator rights the following error popped up:
Error during installation process (com.cisco.pt):
Execution failed (Unexpected exit code: 6): "/Applications/Cisco Packet Tracer 8.0.0/Cisco Packet Tracer 8.0.app/Contents/Resources/updatepttp com.netacad.PacketTracer.8.0.0"
I wasn't able to find any information about supported MacOs system version for each version of PT.
