i installed sucessfully on my late 2011 macbook pro harddisc and playing music nicely, however, i do like to install it on an external ssd harddisc as per the suggestion fm Roon, however in vain.
i downloaded the roon package and drag the roon.dmg to the ssd, open it and it said the software is corrupted and suggest to throw it to the trash.
i did several times and got the same result, but i sucessfully installed it and using now after i draged the downloaded app to application, i.e. the software is now installed on the laptop harddisc but not the exteneral ssd drive