Looking at the installer, seems Ubuntu and Debian is only supported.
And Ubuntu 15.04 64bit Desktop is supported?
Right now we only suppot LTS versions on Ubuntu and Debian,
Currently supported versions are Ubuntu 12.04 and 14.04, Debian 7. Debian 8 support is on the way, we hope that we will support that soon.
I hope your query is resolved. I am closing this support topic for now.
Feel free to create a new support topic if you have any queries further.