Kojo dmg installation hurdles
Blocked installer
When running the installer inside the Kojo dmg, you might see a message like this:

To work around this issue, do the following:
- Right-Click (or Control+Click) on the installer to run it. This will give you the option to "Open" the installer and proceed with the installation.
Or
- Choose System Preferences from the Apple Menu.
- Click Security & Privacy.
- You will see an option to open and run the installer from here.
Damaged dmg
When opening the Kojo dmg file, you might see a message like this:

This is due to a Mac OS security feature. To work around this issue, you can temporarily change a system preference as follows:
- Choose System Preferences from the Apple Menu.
- Click Security & Privacy.
- If the preference is locked, click the Lock (lower left) and enter your admin password to unlock it.
- In the General tab, set Allow applications downloaded from to Anywhere.
- Click Allow From Anywhere.
Now try opening the dmg file again.
Note - after Kojo is installed, you should go back and change the above system preference to its earlier value.