Wireshark - The capture could not be initiated (You don't have permissiont o capture on that device).

It seems Wireshark installer fails to set up permissions.

To fix it, run this manually:-

chgrp access_bpf /dev/bpf*
chmod g+rw /dev/bpf*

Make sure the user is in the "access_bpf" group.

Refs
https://josephhall.org/nqb2/index.php/wrshrkinstll
http://apple.stackexchange.com/questions/138694/what-is-access-bpf-group