Hi,
on my MacOS 10.12.5, both the stable 7.0.2 and the unstable 7.5a1 of the Tor Browser Bunde's DMG files, unlike all other (non-Tor) DMG files I come across, can't be mounted by the system's own DiskImageMounter. Trying to do so gives a "no mountable file system" error message.
When extracting the included TorBrowser.app with BetterZip, the resulting file can't be run.
Cheers, J.