I downloaded latest from Oracle for 12.1, went to software and it was there and checked. Went to activities and there the icon was plain as day. set up a VM for Rosa Marathon and error message lacked kernel or some such.
Then I suspected I lacked dependencies and went back to software and began randomly adding. (Yea I know dumb) At any rate I reversed all that and I need to know in steps if someone will be so kind. (hey being 81 not easy
I was not sure if it was not the live D and a kernel challenge so went to windows and installed on VB without effort. Someone please advise and thanks