I tried to use Linux Debian 8 Jessie and Virtualbox version 5 but got an error. I have posted a message on their forum. That is not to say it will not work for you as I have not been able to run any Virtualbox projects in the last few months. https://climateathome.info/climateathome/forum_user_posts.php?userid=16
EDIT: They replied and said that there is a new version, but I cannot download anything.
OK I have tasks running on Linux 64 bit